Linux Thread

[short condor]

there are probably many

[covert salmon]

There’s been a lot of talk about how it runs out of vram very quickly even on high end cards

I have 8gb vram and it’s maxed out

I think my game may crash soon. My system ram has been slowly creeping up with each revert to the vab

[short condor]

yay memory leaks

[covert salmon]

I just want to land on the mun

I haven’t played kerbal in forever so I’m struggling to build something that’s capable of a round trip

[covert salmon]

Finally landed on the mun. Now I can’t get back in the capsule

[solar quartz]

just run apt-get inside

[craggy nest]

the hardest setup question

[tired flame]

im still having the backscreen issue after having turned off fullscreen, what else can i do?

and it also doesnt save my settings.

[manic wadi]

can we discuss the "pumping sim once" issue

[orchid relic]

the cow has spoken

 _______________ 
< I LOVE KERBAL >
 --------------- 
        \   ^__^
         \  (oo)\_______
            (__)\       )\/\
                ||----w |
                ||     ||

[tardy sinew]

Yeah, for me it crashes when it reaches that on the loading screen after the main menu when running it under proton experimental with the launch options on lowest graphics:
PROTON_USE_WINED3D=1 DXVK_ASYNC=1 __GL_THREADED_OPTIMIZATION=1 __GL_SHADER_DISK_CACHE=1 %command%
In case this might be useful to anyone here is my system info:

KDE Plasma Version: 5.26.5
KDE Frameworks Version: 5.103.0
Qt Version: 5.15.8
Kernel Version: 6.1.12-1-MANJARO (64-bit)
Graphics Platform: X11
Processors: 8 × Intel:registered: Core:tm: i7-9700 CPU @ 3.00GHz
Memory: 15.6 GiB of RAM
Graphics Processor: NVIDIA GeForce RTX 2070/PCIe/SSE2
Manufacturer: Micro-Star International Co., Ltd.
Product Name: B365M PRO Gaming Aegis R(MS-BZ01)
System Version: 1.0```
Edit: Just tested changing it from fullscreen to borderless/windowed, had no effect

[flat skiff]

my game works fine, although 'pumping sim once' is by far the longest part of the load time (about 10 seconds every time)

[tardy sinew]

For me my entire system freezes before it can finish pumping sim once

[acoustic tartan]

I haven’t gotten my game to run better unfortunately

It’s likely there’s some form of CPU bottleneck due to poor physics optimization

Don’t get me wrong the game is still 100% playable

Just it’s slow

Super small crafts can get like

20 fps

Crafts that are small-medium get like

10 fps

I’m not bothering with medium - large

Also after landing on the mun my save file hardlocked

[odd falcon]

it doesnt make sense

has anyone compared it on the same system, same specs, windows vs linux?

my desktop (9700K, 32GB 2400mhz ddr4, 6600xt) runs the game around 47-60FPS medium 1080p on Windows

i dont know what it does in linux becuase i dont have access to it

[finite nebula]

Now pipe it to lolcat

[gleaming elk]

Someone did the comparison earlier and said Windows was about 5fps better, but still only around 20fps.

[wispy torrent]

Yea I saw a huge uplift in my case, 5 fps to like 35 in the VAB and launchpad

and then 25 to like 65 in low orbit

i7 9700k and 2080 running medium settings

[odd falcon]

if thats the more majority case, then there is some issue with Proton

maybe bring it up with valve?

[native rampart]

is there a tl;dr yet?

[odd falcon]

about linux performance with ksp2?

[native rampart]

yes

[odd falcon]

if you have a steam deck, its unplayable right now due to performance issues and it crashing steamos commonly

[native rampart]

expected

[odd falcon]

there seems to be a possible trend that linux performance under proton is much worse than windows native performance

[small zenith]

Tl;dr: ksp2 on Linux sucks but it works perfectly for me because I'm built different

[wispy torrent]

hahah

I haven't fiddled much with the debugging side of proton and dxvk, but I'm planning to. my guess that it's the differences between device memory management in dxvk and direct x

[odd falcon]

is ksp2 DX12 or DX11 still?

[acoustic tartan]

No real change

[native rampart]

DX11 iirc

[acoustic tartan]

Went from like

10 fps to maybe 15

The change was extremely minor if present at all

[wispy torrent]

was your CPU usage pegged in both cases though?

[acoustic tartan]

50% cpu usage

So it was likely a cut choke

Hopefully physics get optimized and that is reduced

[wispy torrent]

I believe DX11, though not positive. Edit: yea definitely DX11, since DXVK doesn't support DX12

[odd falcon]

my cpu is a 9700K and it sits at 80% the whole time

[gleaming elk]

I saw 3GB VRAM on the title screen and 9 in an empty VAB. They said the game is unoptimized and they weren’t kidding.

[finite nebula]

Yeah but is that per core or total?

[acoustic tartan]

Why wouldn’t it be physics related

It’s bottlenecking at the same frame rate on windows as on Linux

[wispy torrent]

I think a couple of us are hitting different bottlenecks

[acoustic tartan]

True

It’s not my graphics card

[wispy torrent]

Mine definitely feels graphics driver related, since usage is pegged. Though I'm pretty sure the "utilization" is being consumed by transfers over the pcie bus

[acoustic tartan]

Yeah

Mine feels cpu related as windows doesn’t give any boost to frame rate

[wispy torrent]

https://github.com/doitsujin/dxvk/issues/3268

https://github.com/ValveSoftware/Proton/issues/6565

Some people may have success reducing the available cores as stated in this issue, WINE_CPU_TOPOLOGY=4:0,1,2,3 or something similar added to you launch options

I wonder if limiting to a single or dual cores improves or worsens things

[acoustic tartan]

Ah

Fps is way lower on wine3d for me

Though wined3d seems to be super hit and miss

For me it was like

10 -> 1-5

Completely destroyed performance

And caused a bunch of terrain to spawn wrong

I say it’s physics for me specifically as the less parts I use the more of a performance increase I get

At small enoguh planes I can easily hit 20+ fps

[quaint parcel]

wow im now getting like 30-40 fps just by adding PROTON_USE_WINED3D=1 DXVK_ASYNC=1 to my launch options though im running all amd so that might have somthing to do with it

[small mango]

for me to suck as much performance out of the game, I use this incredibly long set of launch options: WINE_CPU_TOPOLOGY=4:0,1,2,3 eval $( echo "%command%" | sed "s/PDLauncher\/LauncherPatcher.exe'.*/KSP2_x64.exe'/" ) PROTON_USE_WINED3D=1 DXVK_ASYNC=1 __GL_THREADED_OPTIMIZATION=1 __GL_SHADER_DISK_CACHE=1 %command% In the VAB, I get about 60fps, and 30 everywhere else. during flight with the engine on, I get about 15 fps. (using proton experimental)

[smoky raptor]

Any Linux users using an eGPU? I'm considering getting an eGPU for my laptop but haven't committed yet (although I hope to sometime during the early access)

[opaque stream]

Note that DXVK_ASYNC=1 seems to have been removed from recent versions of GE-Proton: https://www.gamingonlinux.com/2023/01/ge-proton-removes-the-dxvk-async-patch-in-version-7-45/

[opaque stream]

Cool, can you add yourself to the spreadsheet? https://docs.google.com/spreadsheets/d/12kCX2tRIiS85HR58gPX-enXMjALLWIIckLU_s_IVJ84/edit?pli=1#gid=0

[small mango]

sure

[quaint parcel]

im using experimental so not sure if that applies to me

[opaque stream]

from what I can tell, DXVK_ASYNC=1 only does something when using GE-proton, are you sure it has an impact?

[quaint parcel]

not entirely but its runnning a stable 40 fps in VAB and 20-30 in flight

and that was after i added it

[quaint parcel]

I would guess

But theirs definitely a memory
Leak so.where I've noticed over the course of multiple launches my.performance.slowly degrades

[odd falcon]

Got a bit farther today

This is with DXVK. Game won’t run on WineD3D for me

[short condor]

It's really painful to see all of the amd gpu people getting decent results when you have an nvidia gpu

[odd falcon]

Steamos instantly crashed when I pressed go

[odd falcon]

I may do decent on pc at home. I have a 6600xt

[short condor]

cpu seems much more irrelevant than gpu tbh

ah that's a gpu

[odd falcon]

With the steam deck it’s not a cpu issue

[short condor]

amd has somewhat confusing naming lol

[odd falcon]

Something is really not right with the gpu utilization of this game.

MSFS2020 runs flawless on SD

and that is generally more gpu needing

Ksp2 mostly would be cpu computations for fuel and other stuff

Graphics shouldn’t be too difficult

So there is really some issue with how the game is optimized

[short condor]

it's also not an incredibly buggy early access game

[odd falcon]

Well yeah, you’re right

[short condor]

the steam deck does have an advantage due to having an amd gpu

[odd falcon]

But I’d expect an early access release to kind of like.. be playable?

I’m not expecting 60 fps

Something at least 25fps for a early access would be expected

[short condor]

give it a few versions and it might be

[odd falcon]

I’m hoping for that

But I’m wanting to see if there is anything more I can do with this

Maybe if shaders are precompiled it will help? It doesn’t seem to be doing that though

I can’t even run the game from the actual executable because of the PD launcher

[flat skiff]

there's a launch parameter which skips the launcher

eval $( echo "%command%" | sed "s/PDLauncher\/LauncherPatcher.exe'.*/KSP2_x64.exe'/" )

[short condor]

The launcher which basically exists for no reason at all

[flat skiff]

yeah idk what it's for

shareholders?

[odd falcon]

Oh ok I’ll use this then

[odd falcon]

Private Division

Publishers are nasty

[short condor]

Idk if anyone has already noticed this but on nvidia the game has very excessive pcie bandwidth utilization as shown by nvidia settings, like 30-40% utilized continuously.

[odd falcon]

Does that not apply for AMD users?

[flat skiff]

yeah ofc i mean like what is it for, as it doesn't actually achieve anything
but of course it's because it makes shareholders happy because ????

[acoustic tartan]

After trying those codes y’all recommend it actually helped

Seems a majority of the lag is like

[short condor]

the fastest amd gpu I have is integrated and on a laptop with only 8gb of ram so I can't really say

[acoustic tartan]

Coming from the trees???

[odd falcon]

Which codes did you use?

[acoustic tartan]

WINE_CPU_TOPOLOGY=4:0,1,2,3 eval $( echo "%command%" | sed "s/PDLauncher\/LauncherPatcher.exe'.*/KSP2_x64.exe'/" ) PROTON_USE_WINED3D=1 DXVK_ASYNC=1 __GL_THREADED_OPTIMIZATION=1 __GL_SHADER_DISK_CACHE=1 %command%

Proton experimental

[odd falcon]

I’ll try that on my steam deck

Still might suffer from the ram usage issues for me

[acoustic tartan]

The trees drop me by like 10 frames

Probably cause there’s just so many

[odd falcon]

I really hope the game gets better

[acoustic tartan]

It will

It’s more of a early beta build then a proper early acess

[finite nebula]

I mean it is early access, it's 0.1. KSP was alpha when it hit EA

[short condor]

I feel like them using unity may not have been the best decision

[quaint parcel]

Not really for gpus it follows the same pattern as nvidia

[short condor]

yes but I mean it's similar to cpu naming which can get a bit confusing

[quaint parcel]

All gpus ar preface by rx so

[short condor]

especially when they made the 3000xt cpus

[odd falcon]

Unity was the easiest choice

[finite nebula]

Anything else would've required a complete retooling

[quaint parcel]

So a gpu is rx-xxxx whereas cpu would just be xxxx

[odd falcon]

I do hate how unity and unreal are so unoptimized

[short condor]

unreal is probably better

I've more or less just given up on ksp 2 until we get an update

[odd falcon]

Pretty much. Idk how long until the next

I’m hoping for one soon to get most of the bugs and major issues out

At this point, I don’t care about features, just get the game working

[short condor]

The devs probably don't work on weekends, so probably at least a few days

[finite nebula]

At least Dakota has done

[short condor]

wdym

I am confused

[finite nebula]

Dakota, he's the CM

[covert salmon]

Anyone else notice that the fps in the vab goes down when you revert to vab?

[ruby apex]

Changing scenes eventually triggers a big drop in fps for me if thats what you mean

[covert salmon]

I usually have to relaunch the game multiple times before I get the vab to run at 20-30 fps again

I’m not really sure why. Whatever is making the fps drop in the vab just occasionally doesn’t happen

[ruby apex]

Same

Try making a save with a craft on a launchpad/runaway/space and load that directly, see if that makes a difference

[odd falcon]

So far on steam deck with the new launch parameters, half rate shading, and at the lowest res, I get 60FPS in the menu, 14 FPS in KSC, 27 FPS in VAB, and out of ram crashes any farther than that

I’m gonna increase the swap file size so the dedicated ram can be more available for vram

I just increased the UMA size to 4GB. Steam Deck has a 1GB VRAM by default

What I can see though is how much vram that KSP2 uses. In KSC it’s wanting 9.1GB

[odd falcon]

This is the best I’ve gotten. 10-12 FPS on and looking at kerbin. Looking away it goes to around 23-27FPS

[young sluice]

considering, that's not that bad

[small zenith]

If you haven't already, can you add in your input to the spreadsheet? In pins.

[odd falcon]

Oh yeah I can

[minor apex]

I decided I'm going to wait for the first major optimization and bugfix patch to play. I already bought it, but I'll finish up my Fallout 4 game. That is just buggy enough (yeah, pretty damn buggy.)

I like buggy games I guess.

Probably because the Buggy games are pushing certain limits of computers.

Considering my favorite non-buggy games are City Skylines, Planet Coaster and OpenRCT2 those all push the limits of what computers can do, but just do so smoothly. (OpenRCT2 can get framerate loss if you overdo it.)

[short condor]

given how incredibly unoptimized the game is in it's current state, it may take a while.

[odd falcon]

Ok I added my entry to the doc

[sage junco]

got it to run locally on steam deck

used protontricks to run the KSP2_x64.exe in desktop mode

cant load into a game tho

maybe RAM related

[short condor]

apparently a steam deck can outperform most nvidia gpus

[odd falcon]

ive gotten it running and ships in orbit at 20FPS

[sage junco]

but it was not running well lol

really??

wow

[odd falcon]

i had to go into the BIOS and set the GPU to have 4GB of VRAM available for it to be a bit more stable

[sage junco]

even my pc with a 1660 and a 2700x hit like 5-10fps when launching

maybe i used radial parts actually for that ship

[short condor]

this game appears to really hate nvidia gpus

[sage junco]

ahh i had to set it back to 1gb for GTA V to be more stable

really?

interesting

saw a good reddit post on how all the draw calls except for 1 were running at 8ms(120fps)

[odd falcon]

increasing swap may also help, but considering that the steam deck uses fairly good RAM, having more of it available for the game on the fly would help

[sage junco]

the one for the surface of the moon took way longer

looks like its a fairly easy fix for that

[odd falcon]

the SD uses LPDDR5-5500MHz

[sage junco]

some weird huge shader

[odd falcon]

running in quad channel too, so its very fast

[sage junco]

i used cyroutilities to increase swap to 16GB and increase swappiness

[odd falcon]

you can apparently overclock it to 6400MHz if you use some hack but im not gonna do it

[sage junco]

oh wow

[short condor]

could try zram swap too, may be faster

[sage junco]

yeah i bet gta would benefit tho

i havent been able to hit the 90fps cyroutilties did in his video tho

even with the same utility and settings to my knowledge

idk what settings he used to play im using lowest possible

[odd falcon]

it mostly seems like

the game seems to be fairly decent on ram usage, mostly

its just VERY heavy on VRAM

[sage junco]

huh interesting

ahh

i have 8gb

[odd falcon]

in KSC it goes up to 10GB of VRAM used

[sage junco]

jeez

[odd falcon]

so on the SD, that becomes 4GB dedicated and 6GB shared

[sage junco]

ive got a 2080super

yeah thats definitley not enoguh

swap makes stuff a lot slower

[odd falcon]

well its not touching swap yet, since linux should be automatically throwing itself into swap

if things work right, swap should just be the kernel and its stuff that doesnt need fast speed

[sage junco]

yeah

[short condor]

I don't think the kernel is able to swap itself

The kernel is required to retrieve stuff from swap, and if it itself is swapped then it cannot be retrieved.

[odd falcon]

well, i meant like, most of the system services

stuff that isnt being actively worked on

[short condor]

ah yeah fair

[hidden wolf]

NOice.

The latest flags you guys shared got me running way better

eval WINE_CPU_TOPOLOGY=4:0,1,2,3 PROTON_USE_WINED3D=1 DXVK_ASYNC=1 __GL_THREADED_OPTIMIZATION=1 __GL_SHADER_DISK_CACHE=1 $( echo "%command%" | sed "s/PDLauncher\/LauncherPatcher.exe'.*/KSP2_x64.exe'/" )

it's "playable"

xD

10fps at least now and feels way smoother

ooo in VAB i'm getting like 40

weird graphical flickering and line occasionally anybody else?

[odd falcon]

ive heard that it can happen with the PROTON_USE_WINED3D=1 option

i experienced the rocket parts being pink as they loaded in with this

[minor apex]

Yes, to get GOOD performance it will. However, the first pass of improvements is usually drastic.

[odd falcon]

my expectations are low, as long as they can somehow get it to 25-30fps MINIMUM specs, that'll be great

unfortunately because it doesnt work out of the box, its gonna be marked as unsupported in steam

[hidden wolf]

ah yeah

[hidden wolf]

I think this is subject to change though. It is early access, and I am sure eventually we'll just have a native port to use

[odd falcon]

I hope so

Considering the priorities though

Not for a while

Valve likely will be the one to fix the private division launcher

[minor apex]

It does seem to work somewhat out of box in steam on proton experimental. The problem is with the launcher and it still crashes regularly and it's login functionality doesn't work due to improperly handled browser calls.

The game itself works perfectly on steam experimental once you get past the launcher. I haven't tried logging in on the system. However I did link my Private Division Account, Epic Games Account and Steam Account nicely using their website, which is something I've wanted to do for a while.

[hidden wolf]

Do you have AMD gpu?

[minor apex]

Yes, Horrible performance.

[odd falcon]

Even still, the game needs optimizations

[small zenith]

Lessons learnt so far

• Your only real hope is an AMD GPU
• The kraken is basically the deciding factor on if you're playing KSP2 on Linux

[minor apex]

I wouldn't mark it as compatible. I'd mark it as WIP. I hope Private Division can have whomever on their team is a Linux nerd work with Valve on getting proton working.

Even if they plan on making a Linux port (which would be after their current roadmap of getting things stable.)

[hidden wolf]

Yeah dude the game itself is very unstable

[young sluice]

I'm sure they have linux nerds on the dev team, but they have much bigger issues right now

[hidden wolf]

It is still being built in a fundamental sense, so porting to other platforms will always come after that

[minor apex]

As a note, if they are looking for Linux QA Juniors, I'm available. Sometimes getting things working on Proton give insight into where the problems lie because the Wine Stack allows much better tracing of problems.

Also, they should stay open to the idea of using DXVK on Windows, although the Vulkan stack for Unity is VERY similar, it is more tempermental when it comes to shader compiling.

DXVK can be less picky than Direct3D sometimes, on the other hand. It simply has a better preprocessor for legacy HLSL code.

This is compared to the modern SLang code that is preferred by the upstream project that Unity uses.

[short condor]

the one person with intel arc also got decent results

[small zenith]

Funny how the two GPUs that are traditionally associated with bad drivers literally run better than Nvidia in this case

[short condor]

Well on linux nvidia is generally the bad one

[small zenith]

Yeah

Just think it's hilarious

[short condor]

Forget private division, from what I can tell the only thing they've "contributed" to the game is the stupid launcher. All the real work was done by intercept games.

[minor apex]

Intercept games is a subsidiary of Private division.

However, yes, I meant intercept games when I said Private Division. Private Division is the bunch of pencil pushers that deal with contracts, paperwork and courting investors.

[short condor]

and adding stupid launchers that nobody wanted

[minor apex]

Including their primary investor.

I suspect they even outsourced the stupid launcher to one of their subsidiars.

[dapper flume]

I'v got a 1060 6gb and I range from 1-7 fps anywhere other than the main menu and map view. Arch Linux, xfce4, prime-run (because hybrid graphics, not ideal ik), Proton Expreimental, bought through steam. Looking at nvtop it seems like I run out of vram. Any similar problems/solutions?

Supposedly these are bad framerates for my card

[short condor]

nope. For now the game is just unplayable on nvidia. You can try PROTON_USE_WINED3D=1 if you like but it's still not amazing fps.

[short condor]

nah that's pretty much exactly what I'd expect.

[dapper flume]

thanks! atleast im not the only one screwed

[minor apex]

I don't think manually setting CPU topology is necessary. Linux scheduler and wine seem to negotiate that well these days.

dxvk_async is obsolete.

And dxvk isn't loaded if you are using wined3d instead.

[minor apex]

As a note, keeping them both in is harmless.

Does anyone know what display modes KSP2 is built with, or should I just probe to experiment? There are unity launch commands to override the display modes. If Vulkan is supported it may require being forced. Forcing vulkan could drastically improve performance if this is the case. (I don't know why they didn't build for Vulkan. Most Unity programs run better in Vulkan, and it is easier to tune performance for than D3D due to more control.)

[opaque stream]

yeah, I can't see any difference in fps between

WINE_CPU_TOPOLOGY=4:0,1,2,3 eval $( echo "%command%" | sed "s/PDLauncher\/LauncherPatcher.exe'.*/KSP2_x64.exe'/" )  PROTON_USE_WINED3D=1  DXVK_ASYNC=1 __GL_THREADED_OPTIMIZATION=1 __GL_SHADER_DISK_CACHE=1 %command%

and

eval $( echo "%command%" | sed "s/PDLauncher\/LauncherPatcher.exe'.*/KSP2_x64.exe'/" )  PROTON_USE_WINED3D=1 __GL_THREADED_OPTIMIZATION=1 __GL_SHADER_DISK_CACHE=1 %command%

getting 30 fps in KSP and 20-30 fps when flying a rocket

[odd falcon]

Have we figured out why on DXVK it never compiles shaders?

[tardy sinew]

as a friend of his, hes gone through so many launch options that he doesn't even know how many
somehow that one works the best for him

[quaint parcel]

I believe the devs have stated that a Linux port is on the extended road map as well as a Mac port

[craggy hawk]

honestly given perf is so similar and proton worked at launch I think it's unrealistic to expect a native port

[tribal pewter]

proton did not work at launch

well it depends on your definition of "working"

[orchid relic]

if the devs build a version with vulkan i bet we would see way higher fps.

[tribal pewter]

absolutely

[craggy hawk]

I mean, haven't seen radically different numbers, and all I had to do to get into the game was use experimental 🤷‍♂️ was there a fix/patch in the early hours? I was on the mun by 11am friday

[tribal pewter]

when i tried (endeavouros) i was barely able to move the camera in the vab

default settings and experimental proton

[ruby apex]

AMD cards are far better off, Nvidia users are lucky if they get >5fps

[novel mantle]

nVidia users are apparently hitting some issue with graphics stack. @craggy hawk is even having the same graphics and driver as me, but I got terrible results while he does not...

[sage junco]

I wonder if we’ll get a proton GE version with some KSP 2 fixes

[novel mantle]

Since linux version should be coming later, I would expect some fixes to make it work with proton experimental before native comes.

[sage junco]

Do u know what proton GE is?

It’s a fork of proton experimental with community fixes for certain games

For some games that don’t work with proton experimental they work with proton GE

[short condor]

nvidia users are hitting an issue where it utilizes an excessive amount of pcie bandwidth (or at least I am)

[novel mantle]

using excessive pcie bandwidth is likely symptom that something that should work is not working actually...

[short condor]

Yeah

it's like 40-50% utilized

[novel mantle]

how can you tell?

[short condor]

most reasonable things never go above 10% in my experience

nvidia settings tells me

I think this is related to the issue with using too much vram

I suspect what is happening is it is overflowing into system memory and needing to use a lot of bandwidth to keep up

[novel mantle]

can you please run nvidia-smi dmon while running game at kerbin?

[short condor]

sure

I'll just do ksc since I don't feel like launching to orbit rn

Sun Feb 26 10:36:16 2023       
+-----------------------------------------------------------------------------+
| NVIDIA-SMI 525.85.05    Driver Version: 525.85.05    CUDA Version: 12.0     |
|-------------------------------+----------------------+----------------------+
| GPU  Name        Persistence-M| Bus-Id        Disp.A | Volatile Uncorr. ECC |
| Fan  Temp  Perf  Pwr:Usage/Cap|         Memory-Usage | GPU-Util  Compute M. |
|                               |                      |               MIG M. |
|===============================+======================+======================|
|   0  NVIDIA GeForce ...  Off  | 00000000:01:00.0  On |                  N/A |
| 42%   64C    P0    68W / 151W |   8059MiB /  8192MiB |    100%      Default |
|                               |                      |                  N/A |
+-------------------------------+----------------------+----------------------+
                                                                               
+-----------------------------------------------------------------------------+
| Processes:                                                                  |
|  GPU   GI   CI        PID   Type   Process name                  GPU Memory |
|        ID   ID                                                   Usage      |
|=============================================================================|
|    0   N/A  N/A   2911435    C+G   ...ce Program 2\KSP2_x64.exe     6826MiB |
+-----------------------------------------------------------------------------+

Note that I have removed information for other stuff that happens to be running

it seems to have blocked it out for some reason but this is a 1070

ah wait dmon is a different thing

[unreal path]

ok, I know it's not the best place to ask, but what linux kernel would you recommend for gaming only?

[short condor]

honestly probably doesn't matter much

as long as you're using something that isn't incredibly outdated

[novel mantle]

For gaming? use the kernel shipped with your distribution. Don't change it unless you have a specific reason...

[unreal path]

sorry i meant distribution, not kernel lol

[solar quartz]

i've heard good things about pop os

[short condor]

probably doesn't matter much however many of us seem to be using arch or arch based distros...

[novel mantle]

nvidia-smi dmon -s tu , please! 🙂

[solar quartz]

if you love learning and hate having freetime gentoo is always an option

[short condor]

gentoo is stupid

Sorry but it really not practical to compile everything yourself

[small zenith]

Agree but people are allowed to use what they want

[novel mantle]

Indeed, KSP is doing excessive transfers when FPS drops. What's your nvidia-smi dmon -s tu ?:
0 11075 8424 100 6 0 0
0 10799 8688 100 7 0 0
0 10230 8493 100 6 0 0
0 9352 6909 100 7 0 0

gpu rxpci txpci sm mem enc dec

Idx MB/s MB/s % % % %

[static schooner]

every 60 seconds in africa, a minute passes

[ruby apex]

For the same scene, before and after triggering something that does a big fps drop:

Before, 20fps on the launchpad

# gpu rxpci txpci    sm   mem   enc   dec
# Idx  MB/s  MB/s     %     %     %     %
    0  2553  1826   100     9     0     0
    0  2480  1747   100     9     0     0
    0  3014  1412   100     9     0     0
    0  3183  1417   100     9     0     0
    0  3296  1487   100     9     0     0

Stuck at 5fps afterwards

    0  2577  4897   100     2     0     0
    0  3737  6272   100     3     0     0
    0  4455  4334   100     2     0     0
    0  3610  4875   100     3     0     0
    0  1697  4183   100     2     0     0
    0  1916  6338   100     2     0     0
    0  1752  4937   100     2     0     0
    0  2633  4142   100     1     0     0
# gpu rxpci txpci    sm   mem   enc   dec

(Adding just for the sake of having more information)

[odd falcon]

It’s actually pretty low speed on idle

For most games I only see <1GB of activity on the bus

Since, pcie 3.0 max is 32GB/s and that’s never usually saturated by midrange graphics cards

[odd falcon]

Unity Vulkan is 💩

Look at cities skylines

A proper vulkan implementation is Doom 2016

[short condor]

to be honest, even an opengl version of the game would be great at this point.

idk if unity opengl is any good though

[craggy hawk]

@novel mantle https://file.io/wFsZAIamiTLv

overall far lower transfer amounts than others are reporting

[young sluice]

3060 12gb?

[wispy torrent]

it's likely the latency of the transfers here that is important, not necessarily that it fills up bandwidth. If the vulkan draw calls are blocking on waiting for memcpys of assets over pcie, that can easily consume many miliseconds

[craggy hawk]

yep

[wispy torrent]

The reason this isn't an issue on windows is that memory management in DX11 is doing a lot more than what's being done in DXVK: removing unused assets from VRAM, keeping commonly used assets resident in VRAM, etc.

[young sluice]

that's consistent with it being a vram issue

[craggy hawk]

i.e. the people with issues are running out?

[young sluice]

yeah

thats what it seems to me

[wispy torrent]

People with >> 12GB VRAM are reporting OK frames on proton I'm pretty sure

[craggy hawk]

that makes a lot a of sense

although the nvidia-smi numbers must be dirty lies then

since theirs report 9% usage and mine say like 18%

[acoustic tartan]

have we gotten space warp working for linux yet?

[mystic oasis]

Oh man, it definitely likes vram

[hidden wolf]

it's ok guys, i'll just play KSP1 again

[halcyon frigate]

Where are the craft files located on Linux (going crazy looking for them…)

[flat skiff]

Saves are in 'compatdata/954850/dos_c/users/[username]/AppData/LocalLo
w/intercept Games/Kerbal Space Program
2/Saves/SinglePlayer/[savename]/'
I think crafts are stored there too

[halcyon frigate]

Ta!

[digital tartan]

Is [username] your actual username? For me, the directory is just called steamuser (not my actual username)

Wait I might have played myself

Disregard

no i was right, here's the full path: ~/.local/share/Steam/steamapps/compatdata/954850/pfx/drive_c/users/steamuser/AppData/LocalLow/Intercept Games/Kerbal Space Program 2/Saves/SinglePlayer

maybe we're using different proton versions

Crafts should be in [savename]/Workspaces btw

[craggy hawk]

that number for the prefixes changes btw, it's not deterministic afaik

954850

[candid marsh]

954850 should be the Steam AppID for KSP2 - doesn't change iirc.

[acoustic tartan]

has anyone gotten mods working?

[glacial python]

There are mods already?

[brave plover]

Yea, the KSP community is nuts!

[glacial python]

I tried to get the game to run and it kept crashing out while trying to work on something in the VAB, let alone actually get something to launch... I couldn't imagine trying to add mods into the mix!

[acoustic tartan]

moding atm is just adding in some files to the root directory

but this doesnt seem to work on linux

[glacial python]

There seems to be a lot that doesn't work on linux in general

[short condor]

when do we get an update?

[minor apex]

I did get it working today. 15 fps but working.

It actually plays quite smoothly at 15fps and is, at least, a stable 15fps with no stutter. It drops to 10fps when on the surface.

Clearly it has the same issues with quad loading that KSP had, only MUCH worse.

I suspect the framerate would boost if I got out further from a celestial body, but my goal today was to attain orbit, so I only went to a little over 70k

[young sluice]

specs?

[short condor]

it definitely does

I got out of kerbin's SOI a while ago and I was getting 15-20 fps, which is the best I have ever gotten using dxvk.

still terrible though

even though my 1070 isn't even that much below the minimum requirements.

[novel mantle]

Guys, I have a new challenge for you today! Could someone with decent FPS run this and report their numbers?:
while true; do cat /sys/devices/pci0000:00/0000:00:01.1/0000:01:00.0/current_link_speed; sleep 3; done
what is cat /sys/devices/pci0000:00/0000:00:01.1/0000:01:00.0/max_link_speed saying? I got only 16 GT/s with 3060 8GB which might be real bottneck here...

[orchid relic]

kerbal space program 2 run above 20fps challenge (impossible)

[odd falcon]

i could do this if i had my desktop on linux

[novel mantle]

Nope, for @craggy hawk , 20 fps is not impossible. It seems all it takes is 12 GB VRAM graphics 😉

because on my computer with KSP2 running, /sys/devices/pci0000:00/0000:00:01.1/0000:01:00.0/current_link_speed never exceeds 8.0 GT/s PCIe despite max_speed is supposed to be 16 GT/s...

[glacial python]

8.0GT/s for me and my Intel ARC, max of 16GT/s, though the game locks up when I tried to launch from the launchpad, so I wouldn't quite call it playable.

actually running manually from a different bottle doesn't lockup the game, (so that's a plus...), still just 8.0GT/s

[craggy hawk]

Hey, have you tried manually setting all the graphics settings to low and then clicking apply like 5 times? That menu is super buggy for me, I realized the presets were only working like half the time

@novel mantle constant 16GT/S for me during both ^

max is 16 as well

but I found out today that there is a physics thread related to engines that is what's capping my FPS, so make sure you're testing with 1-engine rockets, or the Kerbal-2 at most

@novel mantle you may be onto something. I do have a fancyish mobo, DDR5/AM5, but I wonder if you can get the link to 16GT/s with other applications? Could be a mobo thing, or config thing, or a KSP thing (I find that unlikely)

[novel mantle]

I mostly use a kerbal as a vessel for testing... limits a lot of wrong ship design by great deal

[orchid relic]

what does the WINE_CPU_TOPOLOGY=4:0,1,2,3 launch option even do?

[fathom belfry]

Could it be misreporting because of the double data rate?

Or does that not apply on pcie

[novel mantle]

yeah, these top-of-the-line CPUs/mobo might have the effect if the PCIe bandwidth is all its about. I also have only 2 dimm modules, you may have better performance if you have more/better RAM modules.

nah, just ignore WINE_CPU_TOPOLOGY - it makes your cpu report only 4 cores. I am pretty sure most issues we see with linux are not cpu-bound at all...

[orchid relic]

i thought it was like some dark magic that made the game run better

[novel mantle]

KSP2 is certainly using more than 4 cores of my 12. But no core is running 100%... which is unusual...

@craggy hawk my Nvidia Settings app is telling me I have Gen3 x16 PCIe with 8 GT/s max...

I have Gigabyte B550 VISION D-P with Ryzen 5 5600G with 2x8GB RAM configured to 3600 MT/s...

[craggy hawk]

Ah there ya go then. mine is Gen4 x16, max of 16GT/s

GIGABYTE X670 AORUS ELITE AX AM5 / Ryzen 7 7950x / 4x16gb DDR5 @ 5600 MT/s

I still think vram is your main culprit tho, mine sits at ~9gb utilization in-game

what the heck...

I'm trying to quote your mobo's specs and it keeps deleting my message?

G-series Ryzen only does PCIe 3.0, non-G-series do PCIe 4.0

[novel mantle]

God damn it, what a tiny difference? I have picked the 5600G just to have the option to play with APU if I felt fancy!

[craggy hawk]

still, in-game the pci monitor shows you doing a lot more transferring

so pcie 4 might help some but probably not a ton

[quaint parcel]

Their is definitely some performance issues with linux, when i run the game on windows same hardware & settings i get a stable 60fps compared to 10 on linux

[novel mantle]

I am just guessing there may be some error in vulkan which may ignore my VRAM entirely because if finds that entire content vulkan wanted to allocate won't fit into my VRAM, but will fit into yours. Thus I will do much more transfers - which won't go well especially with less capable pcie. But that's just a speculation...

[wanton surge]

I cant find the physicssettings.json in what steam settings says is my games local files. Where is it? running Manjaro KDE.

[novel mantle]

Game saves are at folder below, but why do you need them?:
~/.local/share/Steam/steamapps/compatdata/954850/pfx/drive_c/users/steamuser/AppData/LocalLow/Intercept Games/Kerbal Space Program 2/Saves/SinglePlayer

[craggy hawk]

no he wants to fix the noodle rockets

@wanton surge https://github.com/penumbra779/Kerbal-Joint-Re-Reinforcement linux instructions here

[novel mantle]

steamapps/compatdata/954850/pfx/drive_c/users/steamuser/AppData/LocalLow/Intercept Games/Kerbal Space Program 2/Global/PhysicsSettings.json

[novel mantle]

A linux user should know PhysicsSettings.json and physicssettings.json are different files 😉

[digital tartan]

I seem to get a handful extra frames per second in X11 compared to Sway

like 16 vs 12 (With K2 in low Kerbin orbit, looking at Kerbin)

could be a fluke of course

[minor apex]

Thanks for telling me where all the files are.

I needed that info.

I would have found it, but you saved me several minutes.

Really saved me time there, thanks

[wanton surge]

i found it after I searched my root folder lol. impatient

[glacial python]

Card            Manu.   VRAM(GB)  MemType    CPU(MHz)   FPS
RTX 3060 Ti     NVIDIA     8      GDDR6      1410        3
RTX 2060        NVIDIA     6      GDDR6      1365        5
RTX 2080        NVIDIA     8      GDDR6      1515        5
RTX 3050 Ti     NVIDIA     4      GDDR6       735        5
RTX 2070        NVIDIA     8      GDDR6      1410        6
RTX 3060        NVIDIA     6      GDDR6       900        7
RTX 2070 (8GB)  NVIDIA     8      GDDR6      1410        8
GTX 1070        NVIDIA     8      GDDR5      1506       10
RTX 3070 (egpu) NVIDIA     8      GDDR6      1500       10
RX 5700 XT      AMD        8      GDDR6      1605       16
RTX 2070Ti      NVIDIA     8      GDDR6      1605       20
RTX 3060        NVIDIA     8      GDDR6      1320       25
RTX 3080 10gb   NVIDIA    10      GDDR6      1440       25
RX-6600XT       AMD        8      GDDR6      2359       25
RTX 3070        NVIDIA     8      GDDR6      1110       30
ARC A770        Intel     16      GDDR6      2100       35
RX 6750 XT      AMD       12      GDDR6      2150       45
RX 6750xt OC    AMD       12      GDDR6      2495       50
RTX 3090 Ti     NVIDIA    24      GDDR6X     1395       60
RX 7900 XT      AMD       20      GDDR6      1500       65

I took the spreadsheet we collected over the weekend and sorted some of the numbers. in short more memory == more FPS.

(specs may not be 100%, I was just going off data the best I could find from searching for the GPU models)

[finite nebula]

Looks quite noisy when the 3060 6gb beats the ti

[glacial python]

Numbers self-reported by individuals, 100% NOT scientific AT ALL, but provides a rough idea.

[finite nebula]

How well does other parts of their pc compare?

Because someone with a better card often has a better pc overall

[glacial python]

https://docs.google.com/spreadsheets/d/12kCX2tRIiS85HR58gPX-enXMjALLWIIckLU_s_IVJ84/edit#gid=0

dunno, it was based off a spreadsheet where a dozen or so folks just self-reported some of their data.

[queen ravine]

I have an RX6800 (16GB VRAM) and I'm getting at least 30-60fps in all scenarios. The performance on my Kubuntu PC has been so good that I turned off the FPS display.

[glacial python]

16GB VRAM 😉 -- You fall into that 'more memory' category.

[orchid relic]

GPU selection would be so much easier if you could just install VRAM like you do RAM

[glacial python]

I have had some video cards with expandable memory

[finite nebula]

Issue is that VRAM require a ton of bandwidth, and has incredibly tight limits on the length of traces

[orchid relic]

true

[finite nebula]

Not sure anyone has mentioned it, but they're apparently working on a Linux build

[odd falcon]

it would still be good to have the Steam Deck GPU in here just because

its a platform ppl would likely play on, which considering its popularity, is currently the most used device on Linux using Steam

around 22% of steam linux users are using the steam deck

[orchid relic]

hopefully this comes out soon!

[glacial python]

I think I omitted the 1 entry for the steamdeck in the sheet because I didn't know what GPU it used.

[short condor]

The game needs a lot of optimization before it can really be playable on a steam deck

[odd falcon]

i made that entry, the steam deck doesnt use an off the shelf GPU

[short condor]

some rdna2 integrated gpu

[odd falcon]

its an RDNA2 based GPU under the RX 6000 series

under its real name, the "Custom GPU 0405" or just call it the steam deck

[glacial python]

but yeah, officially supporting the steamdeck will be huge for the game.

[odd falcon]

vram by default is 1GB but it can use the system memory if it needs to

[odd falcon]

its already kind of impressive that its able to pull off what it did in my testing

[finite nebula]

It's using a shared memory architecture, isn't it?

[odd falcon]

essentially, yes

it by default has 1GB of the system ram dedicated to it, but it can use more of that if it needs to

it has 16GB of LPDDR5 (5500mhz)

[short condor]

It's not uncommon for games to need more than 1GB of vram tbh

[odd falcon]

of course, therefore it can use more of that if it needs to

and i stated in the note that setting it to 4G in the bios helps with out of memory crashes

increasing the swapfile would also help too

[short condor]

I wonder if a zram swap partition could help, it's compressed in ram and not on ssd.

[finite nebula]

Looks like it's in the playtest, test, and development branches, but not in the releasetest or candidate branch, so probs a while

[odd falcon]

ram compression would help a lot as well

[finite nebula]

Would also help in I/O usage, at least if it works as on Windows

[short condor]

disk io was never much of an issue with this game afaik

[finite nebula]

I meant in re paging

[odd falcon]

for the steam deck, the CPU seems to be performant enough

its the GPU issues that the game has

isnt it that when not loading the terrain items like trees and other stuff, that the FPS is improved by like 3x?

[short condor]

cpu seems mostly irrelevant for this game as long as it's not a complete potato

[finite nebula]

Which is arguably a good thing for the future

[short condor]

fair

[odd falcon]

wow

[novel mantle]

This spreadsheet does not tell complete story. But I took one result - AMD and Intel cards runs much better now. Only beefiest nVidia GPUs (24 GB VRA) runs quite well. I have been able to isolate that amount of VRAM of nVidia RTX 3060 is significant. 8 GB runs ~9 fps while 12 GB runs ~25 fps. Is there any nVidia user with >=12 GB VRAM who does not have decent fps?

[finite nebula]

One issue is that people with beefier computers often have beefy GPUs

[novel mantle]

Noone showed any evidence of the game being CPU bound. That's not what dragging performance to below 10 fps with nVidia. Linux nVidia users are hitting a flaw...

[glacial python]

Indeed, folks were seeing what, about 10-15% of a single core at any given time while playing. Also anyone can add more columns to that sheet, it's open for new contributions to all.

If you know of a metric you'd like to see, go ahead and add it and maybe folks will update it.

do we want mainboard too?

[finite nebula]

Maybe RAM speed and number of DIMMs installed vs available on board vs memory channels on CPU?

[glacial python]

oof, I don't even know how many memory channels my cpu has, let alone know how to retrieve that value from a command

[finite nebula]

If it's an intel it's on ark

Just thinking aloud for "things that could affect performance"

[fathom belfry]

loving the custom gpu 0405

what a banger (didnt realise i was scrolled up lol)

[glacial python]

yeah true, my CPU is an AMD though, which I believe they have the same whitepapers

ok, I'll add those fields, I think I can rearrange them a bit anyway

[finite nebula]

tbh I'm not sure it has a noticeable effect

[glacial python]

shrugs, GPU is probably the biggest factor here, but I'm happy to have as much data as folks want, this is a community project after all

[novel mantle]

I hope @craggy hawk won't mind I have submitted his details. We suspect that PCIe speed may make difference. You can read that at Nvidia Settings app.

[glacial python]

I have absolutely no idea how to calculate MT/s from memory, any directions?

[gaunt veldt]

What are peoples' thoughts on having Passmark's benchmarks for both CPUs (Single and multi-threaded rating) and GPUs so we can compare like for like? https://www.cpubenchmark.net/cpu_list.php https://www.videocardbenchmark.net/gpu_list.php

[novel mantle]

Don't include number of RAM slots and configuration in separate columns... most people likely won't know these (although can learn by running dmidecode at terminal)

[glacial python]

Would you still want to see number of sticks installed or just bugger that thought?

[gaunt veldt]

I'd also like to make a suggestion for conditional formatting on the FPS, GPU memory and other parameters. Make red "poor", amber "average" and green "good". Might start to see a correlation with amount of graphics memory, for example

[novel mantle]

I expect that is completely irrelevant. Here is how I can see mine 2x8 GB modules
sudo dmidecode | grep MT/s
Speed: 3600 MT/s
Configured Memory Speed: 3600 MT/s
Speed: 3600 MT/s
Configured Memory Speed: 3600 MT/s

[glacial python]

ok, and thanks for that command! I'll put it into the howto

oooh, look at you knowing how to use a spreadsheet better than me. 😛

[novel mantle]

See? We are getting the picture... is VRAM deciding factor? Could @opaque stream update his entry, please? I wonder if his RTX 3060 is 12 GB too...

[gaunt veldt]

If anyone here has access to some sort of modern Quadro (e.g. NVIDIA Quadro GV100 with 32GB of vram), that would be interesting...

Quadros aren't really meant to be used for gaming, but they usually have higher than average vram for their age

[glacial python]

The quadro would actually be the perfect card, their high vram allows them to run early release code easier.

[gaunt veldt]

Well, it seems modern Quadros are actually pretty good these days :p https://www.videocardbenchmark.net/gpu.php?gpu=Quadro+GV100&id=3919

10+ years ago they weren't very good, just workstation graphics cards

Yeah

[novel mantle]

I find that results submitted by @ruby apex unlikely. Could someone please try to revert to nvidia-520 if that will not result in significant fps increase?

[glacial python]

They did say "20-40"

maybe it was closer to the 20, I just split the difference when I set them to individual numbers.

[fathom belfry]

maybe 20 looking at kerbin and 40 looking at space maybe

is there a way you could make some kind of benchmark mod? use the same craft and set the orbit and camera position?

[glacial python]

That's why I listed the first as KSC, it's a single static view that should be consistent for everyone.

[ruby apex]

Refer to the comment about deleting the ress files, it is the one modification I saw the most change before and after

.

Varies wildly between runs still, hence the range

Does stay closer to the lower 20 bound

[gaunt veldt]

Deleting the .resS files got me an extra 5-10 fps, though I'll play for a bit and see if that drops

[ruby apex]

Of note is that it does ensue some breakage with assets here and there, but doesn't seem to affect gameplay

[finite nebula]

Such as? (So we can be aware of it in other help-threads)

[novel mantle]

Could you find how much video ram you have? Because even with 20 fps, you still got much more than rest of us. Such numbers usually have people wit 10+ GB VRAM.

[gaunt veldt]

Inquisitive rover on the runway with .resS files. 12 fps
Graphics pipe maxed out

Same conditions without resS files. 17 fps and also no periodic freezes

[finite nebula]

What're your specs?

[gaunt veldt]

See the spreadsheet, though in short a slightly overclocked i5-6600k with an undervolted Vega 64 (but still stock clock speeds. Undervolt stops throttling - a common issue on the Vega)

[fathom belfry]

would this work on windows too or is it a linux thing

[gaunt veldt]

Pretty sure it would have the same effect on windows

[finite nebula]

Kinda seems like it's doing fewer transfers, if I'm reading the graph right

[gaunt veldt]

Us Linux users are playing the Windows version anyway, for now

Yeah

[fathom belfry]

i will try

[glacial python]

Seems like the game client is processing less asset data, and seeing that you deleted some assets, that makes sense.

[finite nebula]

I wonder if it's getting stopped on a DMA

[ruby apex]

The training menu center thing is broken
https://media.discordapp.net/attachments/1076272592526258247/1078823090001301595/image.png

Assets for the arrow keys and some other images in the tutorials dont show

And that's about as much as I've noticed

[ruby apex]

8GB GDDR6

[glacial python]

got it updated in the sheet.

[novel mantle]

Strange! This piece doesn't fit the others... perhaps its the driver version?

[ruby apex]

Pretty sure its just the ress files, I can still tank the fps to get stuck at 5 if I change menus enough times

(Ie going to the KSC one a few times, hence why I explicitly call out skipping any menu for testing fps in my earlier message)

[short condor]

removing files makes the game run faster?

[novel mantle]

I doesn't work for me, I might get from 9 fps to 12 fps by deleting all *.resS, but nothing more. Not worth that under this conditions

[gaunt veldt]

Yup. See these messages. I only learned about it today
#🔷ksp2_general message
#🔷ksp2_general message

I'm not sure their suggestions regarding the processor will make that much difference unless you've got loads of stuff running in the background. A better idea there would just be to close everything except KSP 2. Though, Windows itself always has a lot much running in the background so maybe on a Windows system it can make a difference

Setting the preset to 'high', apply settings, then back to 'medium', apply settings makes a big difference to the framerate for me

[short condor]

wow it's stupid that that even makes a difference... However the game is now to the point where I would consider it to be somewhat playable.

looking at kerbin in flight, I get 10fps, looking away I get 20

30 if the game is paused

the game now feels comparable to ksp 1 with a decent sized rocket in RSS

[minor apex]

Faster GPU memory too.

The 7900XT utilizes a wider memory arangement to get more bandwidth without overvoltaging the memory until the power draw burns up your power connector.

Not saying what cards might do that, but I obviously don't like the brand.

[finite nebula]

384b + "infinity cache"

[minor apex]

Yes, more and better cache

[static schooner]

i have 8 and I get 20+

[novel mantle]

Would you mind filling https://docs.google.com/spreadsheets/d/12kCX2tRIiS85HR58gPX-enXMjALLWIIckLU_s_IVJ84/edit?usp=sharing then?

[static schooner]

I do be using windows tho, since my laptop installs linjx but I cannot launch it after I boot into windows

[static schooner]

i know, I should have mentioned it.

I just want to be able to use linux on my laptop so I could help :/

[novel mantle]

This is Linux Thread, we all here want to be able to use Linux. Let me sum up for non-technical people. We are used to Steam's Proton being so successful with running Windows games that we expected KSP2 would be running near/at native Windows performance. But we instead see hardware configuration which on Windows should be able produce decent 20+ FPS at Kerbin to produce under 10 FPS - which is kinda unplayable. This is not because Linux has 10, 20 or 30 % lower performance than Windows. This is because Proton is affected by a bug which is preventing usual performance, allowing only fraction of particular hardware should be capable of.
This is not about the KSP2 is not well optimized yet. Perhaps even Windows users are hitting similar bugs - which might be the very reason why there is so many unhappy users. I believe Intercept Games would have done better, if they have not made public launch yet. But there are people even on Linux, which are able to enjoy the game. Only its few of them (owners of 10+ GB VRAM GPUs).

[tribal pewter]

this is the first game i have played for which proton has been a significant obstacle to performance

hats off to the devs at steam for making it work so well but it is annoying how people use the excuse of "it said it didnt have linux support" when proton has worked so well on so many unsupported games

[flat skiff]

i assume you mean "it said it didn't have linux support"?

[tribal pewter]

...yes

[flat skiff]

thought you were saying proton didn't work on windows or something lol
i am not very smart (that took me about two mins to figure out 😔)

[tribal pewter]

i am also not very smart apparently

[novel mantle]

I believe its worth mentioning that it is not just Steam work which makes so much Windows stuff runnable. They called it Steam Proton, but it just environment where Steam make sure WINE can really shine, and indeed it does. I am not that familiar with WINE, but I assume Steam is actually a HUGE contributor, but not the only one.
And I bet what we are experience with Proton hitting something in graphics stack is the primary reason why Linux build was not made public in any way. Or at least I hope so...

[wanton surge]

whats the proton bug?

[young sluice]

the linux build wouldn't have much to do with proton support though, no?

[sleek salmon]

Just been playing around with cryoutilities. Game seems to be running a lot smoother now

No longer crashing every time you go back and forth in the VAB or main screen

Frame rate still drops a lot at some points but it no longer just crashes

I’ll get some screenshots

Graphics are set to medium

Low seems to run slower

[small zenith]

Can you add any specific changes to the spreadsheet?

[short condor]

I've made an amazing discovery. Can someone try adding -screen-quality Fastest to their launch args? I'm now getting 85fps in the vab

[final osprey]

testing momentarily

[short condor]

works great with dxvk even

[final osprey]

did you add that after echo or after sed ?

[short condor]

idk, for ease of testing I started it from the command line lol

but I will figure it out

[final osprey]

what's the full line you used

oh jesus

[final osprey]

yeah this helps performance a LOT

eval $(echo "%command% -screen-quality Fastest" | sed "s/PDLauncher\/LauncherPatcher.exe'.*/KSP2_x64.exe'/" ) for steam launch args while skipping launcher

above does not work, ACTUALLY WORKS:
eval $(echo "mangohud %command%" | sed "s/PDLauncher\/LauncherPatcher.exe'.*/KSP2_x64.exe'/" ) -screen-quality Fastest

[short condor]

There's several other valid options, Fastest, Fast, Simple, Good, Beautiful, Fantastic (default)

[final osprey]

testing exactly how much faster now

[short condor]

Of course, fantastic appears to be the highest setting

[final osprey]

In the start screen it improved my fps from ~160 to ~400
KSC doesn't seem to change
VAB seems to get a slight boost
One of my ships performance did not see any noticable gain
Orbit around duna and landed also didn't

Seems to help in specific situations, but not everywhere. Could also be I'm on a high enough end computer that it just doesn't affect much, I will test on my laptop shortly

[short condor]

this does not work apparently

[final osprey]

I don't see any drawback to the argument though

[final osprey]

launching from cmd or steam?

[short condor]

haven't gotten it to work launching from steam

if it works properly you shouldn't see 3d trees at ksc

[final osprey]

oh
I might not have done it right, one moment

[short condor]

noticably worse graphics but infinitely more playable

this works eval $(echo "mangohud %command%" | sed "s/PDLauncher\/LauncherPatcher.exe'.*/KSP2_x64.exe'/" ) -screen-quality Fastest

it's actually... smooth

[final osprey]

ohhhh editing my original message

trees are gone, definitely worked

[short condor]

you should now be getting 50+ fps in VAB probably

[final osprey]

I was already getting 140 but let me check

now getting 160

[short condor]

well for me it was a 5x improvement or more in some cases

[final osprey]

and an improvement at the KSC view by ~15 fps from 60 to 75

I'll test on my laptop that actually has bad graphics in a moment

[short condor]

Probably because it decreases the vram requirements to something that an 8gb card can handle

[final osprey]

VRAM before varied between 9 and 11 on my card, I'll check now

in the short time I tested, VRAM usage did not go above 8gb (or below 6)

[odd falcon]

lemme try it on my SD

that argument goes at the end?

[final osprey]

yes, like this

without mangohud if you don't want it (or haven't installed it)

[odd falcon]

my argument is this before: eval $( echo "%command%" | sed "s/PDLauncher\/LauncherPatcher.exe'.*/KSP2_x64.exe'/" ) PROTON_USE_WINED3D=1 __GL_THREADED_OPTIMIZATION=1 __GL_SHADER_DISK_CACHE=1 %command%

afterward it would be eval $( echo "%command%" | sed "s/PDLauncher\/LauncherPatcher.exe'.*/KSP2_x64.exe'/" ) PROTON_USE_WINED3D=1 __GL_THREADED_OPTIMIZATION=1 __GL_SHADER_DISK_CACHE=1 %command% -screen-quality Fastest ?

[final osprey]

try it? no idea

[odd falcon]

im using DXVK though so i dont use the wined3d option

ok

my observations so far

ram usage is INSTANTLY better

im no longer seeing 5.6GB total in menu now, only 4.7GB

[short condor]

this beats wined3d while being less glitchy for me

[odd falcon]

does this command also work on windows???

[final osprey]

that is a good question

[short condor]

probably

[orchid relic]

-screen-quality Fastest probably works on windows too.

[short condor]

it is most likely also beneficial on windows

[odd falcon]

so my observations on the steam deck

framerate has not improved much?

i still get 11FPS looking at kerbin, 20FPS looking away

but memory usage has improved drastically

[short condor]

it improves vram usage but it still requires a decent amount

[odd falcon]

the game can actually load with 1G UMA

now using around 12GB total system memory

lemme run at a lower res and use FSR

OI

Uh

the steam deck

is now...

processing vulkan shaders??

it did it for a few seconds, but it seems to actually be compiling something now

[final osprey]

I've had that a few times on launch, it normally just takes a second

[odd falcon]

running at 800x500 only improves framerate by about 2 FPS

vram usage is significantly improved however, which really helps with stability on the steam deck

[final osprey]

on 3050 Ti laptop
before
Start - 100 fps
VAB - 10 fps
Launchpad - 5 fps
Flight - 3 fps
Duna orbit - 6 fps
after
Start - 120 fps
VAB - 10 fps
Launchpad - 5 fps
Flight - 3 fps
Duna orbit - 11 fps

so not perfect, but improved fps in some scenarios?

[odd falcon]

are there any mods that exist yet that have helped with performance?

[final osprey]

maybe because I only have 4gb of VRAM on this, there isn't enough change to improve performance completely, but my 3090 ti didn't see much performance boost either because it already had enough vram? (this is a guess, which if true supports that cards between ~8-10 VRAM would see the most benefit)

[odd falcon]

it seems like it may improve performance on low VRAM systems

mostly because when it exceeds the dedicated amount, it moves towards system memory

[small zenith]

12gb vram gaming

[odd falcon]

so i think in this case, it just improves the amount of vram that is accessible at full speed

but for unified memory systems, it just helps with memory usage amounts

so the steam deck wont improve drastically, but will help with stability due to the memory usage

[final osprey]

definitely an improvement, thanks for sharing!

[covert salmon]

I think I’ll try it once the tornado warning in my area ends and I can leave my bathroom. I have a 2060 super with 8GB of vram, so I think I’m in the suite spot for this command.

[covert salmon]

Before
10-20 fps at KSC
5-25 fps in VAB
5 fps on launch pad

After
50-55 fps at KSC
50 fps in VAB
25 fps on launch pad

That’s a significant improvement for me across the board. I haven’t tried launching yet, but I’ve seen upwards of 60 fps (with vsync on a 60hz monitor) in space with no planets in view.

I’m still using nearly all 8GB of vram and 9.5GB ram, but I was using basically 100% vram before, now it’s closer to 95% of vram.

[pure ice]

Worked for me, went from 7 fps at the KSC to 40, and around 80 in the VAB, on an RX 6600 8gb and 16gb RAM

[covert salmon]

Just launched a decent sized rocket and had one of my cleanest launches yet.

I’m getting about 30 fps in orbit looking at kerbin with 90% vram usage

Getting ~40 fps looking at the mun from orbit

[covert salmon]

I added my stats to the doc with the new option

[ruby apex]

That seems on par with my windows resource usage differences

[opaque stream]

Nice, does indeed lower vram usage. Note: it seems default is whatever you launched with last time, I did

eval $( echo "%command%" | sed "s/PDLauncher\/LauncherPatcher.exe'.*/KSP2_x64.exe'/" )  PROTON_USE_WINED3D=1 __GL_THREADED_OPTIMIZATION=1 __GL_SHADER_DISK_CACHE=1 %command% -screen-quality Fastests

when I then did

eval $( echo "%command%" | sed "s/PDLauncher\/LauncherPatcher.exe'.*/KSP2_x64.exe'/" )  PROTON_USE_WINED3D=1 __GL_THREADED_OPTIMIZATION=1 __GL_SHADER_DISK_CACHE=1 %command%

VRAM usage was still low and the trees where ugly when landing in the forrest, needed -screen-quality Fantastic to get back

[finite nebula]

AFAIK it'd be a Linux-native build

[static schooner]

can someone test of disabling hyperthreading on your cpu increases fps on linux?

I wanted to test it myself but my laptop just nukes the linux bootloader every time.

[chrome plover]

I’m late but you are an amazing person for this

Didn’t mean to @ oh god such an old message I’m sorry

[halcyon frigate]

eval $(echo "mangohud %command%" | sed "s/PDLauncher/LauncherPatcher.exe'.*/KSP2_x64.exe'/" ) -screen-quality Fastest

This, for me, is magic. The graphics are maybe less good (at 1440), but the UI is now usable (previously for example, when adjusting my view of the ship, the tiniest mouse move would send the view uncontrollable spinning, small changes were simply not possible). Linux, decent/recent i7 with 64GB, but a paltry GTX970 (that’s just 4GB!).

Magic, thanks….

For clarity, I’m now getting a solid (!) 8fps on my ship view (up from 2-3), and 30 fps on map view (up from 12-15)…. Also, the GPU seems to be working harder - the colourful display I now get, says 100%, but nvidia-smi now reports it is running at 115W/200W (up from about 60W)…

[glacial python]

Good find, seems to be helping quite a few folks.

[acoustic tartan]

Will test that when I’m home

May let me avoid using windows for my grand tour!

Also where are ships saved just in case I need to yoink my ship and move it over to windows

[glacial python]

[STEAM_GAME_LIBRARY]/steamapps/compatdata/954850/pfx/drive_c/users/steamuser/AppData/LocalLow/Intercept Games/Kerbal Space Program 2/Saves/SinglePlayer/

(where STEAM_GAME_LIBRARY is $HOME/.steam/debian-installation by default.... I think)

[acoustic tartan]

thanks!

im preping for a grand tour

all planets and Moons

need all the frames i can get aha

[glacial python]

HAH, good luck... judging from my experience and others that I've seen, just getting a simple craft not to bug out and RUD is an accomplishment in the current state.

[acoustic tartan]

so far my best has been

Kerbin -> Moho -> Eve -> Duna

[short condor]

gg. The most I've done so far is a sideways mun landing

[acoustic tartan]

the reason that attempt failed was the ship tipped over

lol

the rest of the attempts failed due to kracken

[glacial python]

Also out of curiosity, anyone else have floating trees and bushes about 10m above KSC when launching crafts?

[acoustic tartan]

mainly me opening landing gear in high orbit

[spare adder]

yeah, i have that too

[acoustic tartan]

i dont have that

[chrome plover]

Getting off work now but just saying it worked and I got a 3x boost in FPS

[flat skiff]

smh doesn't work at all, doesn't make my 60fps on launchpad go any higher 😔

[orchid relic]

so when the game came out i was getting like 3-4 fps at the ksc, but with -screen-quality Fastest and FSR, im getting about 55

[small zenith]

With screen-quality fastest in vab I get 60-80

Getting about 40 in the pad

25-30 after launch

After removing it, the difference seems to be about f all

[digital tartan]

You already have fps in the double digits and you want more? Get outta here

[short condor]

lmao why is this message pinned

[foggy plaza]

What's the name of this tool?

[tired flame]

Is there a KSP2 launch option to disable fullscreen? My settings just keep bouncing back to default when I restart the game.

[orchid relic]

its -popupwindow for borderless fullscreen and -windowed for a normal window

[tired flame]

Thanks, will try!

[short condor]

that looks like bpytop

but it's written in python so I don't recommend using it

[orchid relic]

its bashtop pretty sure

[short condor]

hmm yes, the tools both have a very similar ui style

[wanton surge]

This doesn’t work for me, or at least the performance isn’t noticeably better. Not using the WINED3D options as that deletes the KSC landmass.

[orchid relic]

with a custom bottles launch, i was able to get my fps at the KSC from 10 all the way up to 70. here's my config if anyone wants to give it a shot. note that you will have to change the KSP2_x64.exe path to wherever you have it installed. https://drive.google.com/file/d/1xp6xMIEnRja32skXOB6JSfIENC8vkdu3/view

[ruby apex]

It's its C rewrite, btop++

@foggy plaza ^

[foggy plaza]

Okay, thanks

[hidden wolf]

Sorry, I have never used bottles. What do I need to install on ubuntu to use this?

[orchid relic]

just the bottles flatpak

[wispy torrent]

Where does -screen-quality even come from? Is it just an argument of the game executable? Something seen on most unity games? Proton? I can't find any reference to it.

[short condor]

it's an argument to the game executable

I think it's a unity thing

the actual quality presets are specific to this game though

[wispy torrent]

gotcha, thanks!

[short condor]

I found it by taking some inspiration from the modding people and reverse engineered the game

[wispy torrent]

I was really happy to learn how easy it is to reverse engineer unity games. I'm guessing finding it was more work than ./KSP2_x64.exe --help though. 🙂 Suppose you decompiled a couple of the dlls and stumbled upon some of the C# code for handling the CLI args?

[short condor]

Nope. I used a thing called assetripper that basically turns the entire game into a unity project

I then opened it in unity (safe mode because it had errors), and was looking at the project settings

[wispy torrent]

Stunning. hahah

[short condor]

So if you really want I could even tell you exactly what each of the screen-quality options does

[wispy torrent]

Do tell!

knowledge is power here

[short condor]

iirc fastest uses half res textures, disables anti aliasing, and does several other things that I don't remember, I'll check when I get home

[short condor]

https://docs.google.com/spreadsheets/d/1bwuYTLDYO_zizYgmRXmF_YxHlxFHNQGlNzCBpfMeYxw/edit?usp=sharing I made a spreadsheet showing exactly what each option does

[candid marsh]

Wow, screen-quality actually made the difference for me. ~30 FPS in space (~12 FPS with Kerbin in view, ~50 FPS looking into space). 🙂

[wispy torrent]

thanks! I shared this with others tracking KSP 2 performance on the DXVK repo

[short condor]

yeah that seems to be the case for most people that have tried it

[covert salmon]

How well does this help on windows? Has anyone shared this with windows players?

[short condor]

I did mention it in #🔹ksp2_technical a while ago

idk how many people saw it

[minor apex]

Has anyone determined if any of the standard Unity options for changing the graphics stack are built into to KSP2 yet? Specifically forcing Vulkan, OpenGL or earlier D3D options?

[orchid relic]

only D3D11 is supported in the current build sadly

[minor apex]

Has anyone experimented with using DXVK to force the feature level lower?

As a note in WineD3D or D3DVK you can use registry entries to do the same.

I am not sure if DXVK honors these registry entries.

It might.

[orchid relic]

i had my nvidia driver bug out on me and it said feature level 10 was too low to run the game so i dont think theres much we can do with that

[minor apex]

I bet at most we can cut it to 11.0, then. I suspect it is due to the fragment shader count. Technically the setting only lies to the program so it will install it's own limits. There is a way to strip access to some features by disabling DLLs.

[short condor]

I have. It either fails to launch or has really glitched graphics depending on what feature level you select.

[orchid relic]

so... what now?

are there any other random environment variables that could potentially but probably not boost fps?

[short condor]

-screen-quality Fastest seems to fix vram issues

[glacial python]

IMO, blocky potato graphics are better than nothing at all.

[chrome plover]

My only complaints are when it’s just a glitch and not just bad graphics. (In terms of the fix, not KSP2 in general)

My extra small jet fuel tanks just spaz out

[halcyon frigate]

(It may be obvious to some) but I just turned off “VSYNC” for a serious improvement in fps, and with no degradation of display….

[covert salmon]

Why would turning off vsync improve things? Improve from what?

[odd falcon]

turning off vsync would let the game run as fast as possible

with it on, youre limited to your monitors' refresh rate

which if you are exceeding it during gameplay, your pc is a bit overpowered for what you do. your target performance should be the resolution and hz of your monitor, + a bit margins for futureproofing

[acoustic tartan]

also games running through proton tend to have

issues

with vsync

for example

my monitor is 60 hz

when playing warframe i accidentally had vsync on

and got like

15 fps

but after turning off vsync

i got well over 60 fps

something about how proton interacts with some games vsync settings causes problems on linux

its wierd

[wanton surge]

My brother in Christ no one is Vsync limited in this game unless they have a super computer.

I am vsync limited in KSP 1 though, even with scatterer, EVE-Redux and waterfall going full blast.

On the same hardware that gives 8 fps in KSP 2.

[digital tartan]

Technically vsync would limit updates to happen on a multiple of 16.66ms no? So even if you're not reaching 60fps, you might get your precious few frames ever so slightly earlier with vsync off. Not that you would notice at 8fps though.

Or like, half the screen would get the new frame earlier

It probably won't increase fps, but it might lower latency by at most 16.66 ms

On average 8ms

[short condor]

I doubt ksp 2 game speed would be tied to fps, at least in the future with multiplayer.

[odd falcon]

i never said that they were vsync limited, only that vsync would be a limiting factor above your monitors' refresh rate

[minor apex]

The problem with VSync is that if the game isn't properly triple-buffering it can add substantial busy delay in the rendering stack.

They may need to fix this by changing it to use triple buffering.

[halcyon frigate]

Looks like the “available for Linux” flag has disappeared from Steam…

[finite nebula]

Source on that last bit: https://steamdb.info/app/954850/depots/, 954853

[short condor]

I don't think it ever was officially available for linux

[odd falcon]

finally got around to installing linux and ksp2 on my pc at home

1 FPS

lemme try with wayland

2 seconds/frame

im only getting like

1-2 FPS

oops

was using AMDVLK

mmmmmmmm 316 FPS

time to make a spreadsheet!

[wanton surge]

hmm

I should check what driver i'm using.

[wanton surge]

using the amdgpu kernel driver, I think thats the good one?

[odd falcon]

vulkan driver is the issue i was having.

seems on KSP2, or really anything, AMDVLK is pretty bad

vulkan-radeon is what you want

[small zenith]

Isn't AMDVLK for ryzen CPUs?

Huh, guess it isn't

[short condor]

I would think cpu does not matter for what gpu driver should be used

[odd falcon]

It does not

[acoustic tartan]

supposedly the latest version of space warp works on linux but i cant get it working

[short condor]

I tried it about 2 weeks ago and it seemingly did nothing at all. It's of course entirely possible that I didn't install it correctly.

[digital tartan]

I added a GPU vendor column to the spreadsheet

It might make sense to scrub that from the specific GPU field? To make the data more consistent

Some people have put the vendor in, others not

Makes it kinda hard to read

I think it would make it clearer and easier to compare if we make it consistent, one field for vendor and one for product name

But I didn't wanna go in and change everyone's data without a discussion

[celest kettle]

It would also be a good idea to add the played resolution, 720p is very different from 4k

[halcyon frigate]

On release day it showed it as "Availablefor Linux", I was able to download it to a Linux system. Today it doesn't, and I can't...

[digital tartan]

Go into Steam settings -> Steam Play, and check the box that enables Steam Play for all titles

[halcyon frigate]

Ah! Thanks.

[glacial python]

Cool, good call.

[short condor]

yeah steam will let you download literally any windows game on linux

[wanton surge]

Sometimes it’s better than the native Linux builds of certain games, namely Black Mesa Definitive Edition.

[chrome plover]

Also, Warhammer 3, it doesn’t run quite as good but you get the most recent updates at least so you can play with your friends on windows

[small zenith]

Linux nerds, assemble

[hushed ibex]

I just tried it without any flags, and was still 3fps when I went to launch, so going to play a bit later to see

[glacial python]

WOT?

[rigid flame]

is it just me or do the orbits no longer show up

[rigid flame]

hm, after a restart the orbits are there, but mun is just black

[acoustic tartan]

yeah i noticed a FPS increase

[rigid flame]

that's one way to get more fps, don't render anything lol

[digital tartan]

Noticeable improvement! I get stable 20 fps on the launchpad now, instead of 16

[rigid flame]

hm, exploding when going to EVA

but much better framerates

[final osprey]

added version column to the performance sheet
Will test with my computers sometime within a few days

[short condor]

things randomly exploding for seemingly no reason is an issue I have experienced both before and after the patch.

[wispy torrent]

Yesterday I encountered a new (to me) bug where my craft begins to rotate rapidly with SAS on until it falls apart. Not sure if it was related, but at the same time I had a decoupler that drifted far away from the craft while still being attached

[hushed ibex]

When I was launching yesterday, I couldn't keep control at all and instantly went into a spin where it shouldn't have, I do wonder if related to what you saw

[minor apex]

I've seen a lot of Windows users complain too. I wonder if it is more common in Wine or not.

[minor apex]

The more frequent issues on Linux might just be that more Linux users are willing to attempt to run the game on under-spec systems.

[short condor]

I really doubt it.

Things exploding is caused by logic in the game's code. This is something I am pretty much confident proton doesn't mess with as it would likely break a lot of stuff.

[short condor]

The types of issues proton can introduce are mostly performance related, although it's probably possible that some software relies on some very specific quirk of windows libraries in order to function correctly, and the wine version doesn't have that quirk because to be honest there's simply no way that the wine versions of libraries are 100% perfect.

or the library being less optimized like with dxvk

[hushed ibex]

What are people using for the launch settings with this latest patch?

[minor apex]

My thought is that the performance issues cause. Back when the various physics bugs were common in KSP1 the bugs were made infinately worse by low framerates until a function was put in to slow down time if the framerate got too low.

[short condor]

for me at least, same as before the patch

[hushed ibex]

thank you! 👍

[short condor]

for me -screen-quality Fastest still seems necessary to get decent fps

[digital tartan]

Yea I just barely have a smooth enough framerate now that it doesn't bother me, I'm not itching to go back to slideshow mode just to get sharper shadows or whatever.

[wanton surge]

maybe its because my system is so low end but -screen-quality-fastest has no effect on performance.

game still draws trees and clouds.

I also didn't realize any of the supposed performance improvements in Patch 1, if anything it got worse.

[final osprey]

the argument must be added at the very end of everything in launch options and is "-screen-quality Fastest", not "-screen-quality-fastest"

[final osprey]

When you did this, where did you move UnityPlayer.dll and everything else?

[short condor]

If trees are still visible while at the ksc, then you haven't done it correctly.

full launch options should be eval $(echo "%command%" | sed "s/PDLauncher\/LauncherPatcher.exe'.*/KSP2_x64.exe'/" ) -screen-quality Fastest

[orchid relic]

i just moved the whole steamapps ksp2 folder out to a different directory

[sudden badger]

Thanks, @short condor . Copy pasting your launch options gave me the best KSP2 experience on Linux so far. Usually 30fps+ . Frames were better with PROTON_USE_WINED3D=1, but the missing/black terrain is a deal breaker.

[short condor]

for me this even beat PROTON_USE_WINED3D

[sudden badger]

I was hitting 100+fps sometimes with PROTON_USE_WINED3D=1 but of course it helps when you don't bother to render the ENTIRE PLANET 😆

[final osprey]

Figured it out, on some distributions the file handler will create a sandboxed directory that doesn't have access to UnityPlayer.dll and the other stuff, and copy KSP_x64.exe there, which doesn't allow it to launch with wine. To get around this I did flatpak override --user --filesystem="host" com.usebottles.bottles
note that this is technically "less secure"

Also one of the more important options is that in bottles, the option that enables Steam libraries (I think it was Steam runtime or something) has to be on, or the game doesn't seem to work

unfortunately after all that effort, it lowered performance instead of raising it on my 3050 ti laptop machine no matter which settings I used. I will eventually test on my 3090 ti desktop though, and see what the results are

[wanton surge]

I pasted that exactly and still have trees when on the launchpad which means it doesn't work.

[wanton surge]

does skip the launcher though which is nice.

[short condor]

trees on launchpad is probably fine, it doesn't stop them from rendering them completely, it just sets the rendering range very low

but do you see any when in the ksc screen

not in flight mode

[wanton surge]

yes, lots

buttery smooth 8 fps on the launch pad

worst case scenario in KSP 1 (every visual mod loaded, staring down at Kerbin with a 90 part ship I net at least 4 times that on the same computer. The fact this game passed QA is a disgrace.

[short condor]

hmm that actually looks like it worked

I mean in like the default camera position

sorry I should have specified

what are your specs?

[wanton surge]

6900HX cpu with integrated graphics, 32 gigs of DDR5.

[short condor]

that's your problem lol

honestly given what hardware you have 8fps is kinda impressive

I have a 1070 and get about 25 with a similar camera angle

your cpu is great but this game currently seems incapable of benefiting from a great cpu.

[odd falcon]

It’s Crysis. That’s as simple as it is

[short condor]

but can it run ksp 2?

[orchid relic]

anyone else having super buggy audio in the vab?

like unbelievably bad crackling audio?

[knotty light]

thats why its buggy

[sterile stone]

I'm on Arch with an RTX 2060 and i5 9th gen, game loads up pretty quickly, but once a save is loaded it's really heavy and runs at about 2 FPS. Takes up all system resources too, navigating outside the window is also quite difficult and unresponsive. This was on Proton's experimental branch though, I don't really know how others reached bearable FPS...

to me -screen-quality Fastest is not doing all that difference

maybe i gain a couple FPS out of it

[covert salmon]

I think you're probably hitting the vram wall. I have a 2060 Super, which has 8GB of vram, and I can get 30-60 fps sometimes with -screen-quality Good and low graphics settings, but my vram is almost completely full. I think I use just under 8GB of vram. Your card only has 6GB of vram, which is known to have significant performance issues.

[sterile stone]

i hear that the game runs fine though on the GTX 1660 on native, which has the same amount of vram, and less cores too. i think it has to be something else

[short condor]

That's odd

you sure you did it correctly?

[sterile stone]

im certain

i added it to launch options

[short condor]

like this?

@sterile stone

simply adding it somewhere does not necessarily mean it's going to work

[wanton surge]

Hey just like me!

[sterile stone]

exactly like that

what else can i say?

[short condor]

that's odd that it doesn't seem to do anything

[sterile stone]

im using protons experimental branch though, might try a stable one

[short condor]

Try proton ge

[sterile stone]

exact same thing on proton 7.0

definitely not an experimental bug

[covert salmon]

@sterile stone do you have anything else running at the same time as the game? When I play, I can barely run anything else without massive performance issues.

specifically any windows that may be open at the same time

[short condor]

particularly things that use a lot of vram (apparently steam can sometimes fall into this category...)

[covert salmon]

I use a terminal with a transparent background and if I tried launching it while the game was already running, it just wouldn't launch so I had to launch it first to get nvtop. I haven't tried that again since the patch, but I think that probably wouldn't happen anymore depending on what scene I'm looking at.

[short condor]

I sometimes even run out of vram while playing the game and i can immediately tell because the game gets really slow

I run with screen quality fastest and anti aliasing enabled on the lowest setting since it makes things look way better with minimal performance cost

[sterile stone]

i dont think enough to really impact performance

i might try disabling kwin

see how much that helps

[covert salmon]

You’d be surprised

This game eats everything it can

[sterile stone]

lol

[short condor]

excess vram usage is the main issue in my experience

this game loves vram

[sterile stone]

i might try later, but honestly i think i can wait until therell be more optimisations

hopefully a native version

[short condor]

they're definitely working on it

[covert salmon]

If you have nvtop installed you can see the vram usage. I think yours is probably at 100%

[sterile stone]

do we have confirmation? they said that they are definitely considering it, but i dont think they are actively trying to get it to us rn

[short condor]

steamdb

wow I get 55fps in orbit looking away from kerbin, 16 looking at kerbin

[minor apex]

Yeah, I get near 100% VRAM usage w/ 8GB of VRAM. They REALLY need to optimize VRAM.

[minor apex]

They need to use shared textures for all the parts, and use some form of real-time generated textures for terrain that will create terrains from much smaller textures. (2GB of texture should be able to texture several planets with the appropriate shader filters.)

If they want to sacrifice quality they could do it in 1GB.

Parts should be easy to fit in 1GB.

See how Restock got so many HD quality parts on so few textures for KSP1.

[hidden wolf]

Hey y'all

How are things? I haven't checked since launch

[digital tartan]

I have a little bit better framerates overall, much better when I'm not near a planet, but some of the performance issues are very much still a thing. Some bugs are gone, many remain

[hidden wolf]

That's OK. Just checking in

Thanks for response

[minor apex]

KSP2 is still slow as a snail on my computer. I'm going to need to do more detailed profiling, but I think GPU memory bandwidth is my limiting factor. The GPU's memory cranks up to a higher clock, but the GPU cores do not.

Framerate is still awful, but it is more consistent. No more drops into below 1fps.

[short condor]

so overclock your vram obviously

[minor apex]

Probably will need to. My GPU likely has tons of headroom on that. I just need to enable overclocking.

[short condor]

yeah vram can sometimes overclock quite a bit. For example I have a stable +900 mhz overclock to 8900 mhz on my 1070

[minor apex]

Well all I had to do was set it to the pre-OCed power profile mode from the manufacturer. Which honestly just changes some of the other clocks and how quickly they upclock.

I think it might also change some hidden settings such as turbo limiters.

It doubled my VRAM speed when playing the game.

I am not CPU limited, but I don't have an indicator of CPU-side RAM usage.

However, I don't have the module loaded for advanced CPU statistics. That might be what I need.

[covert salmon]

The new patch seems much better on vram. I’m on medium settings with no launch options except the one that skips the launcher and I’m getting 55 fps in the VAB on an RTX 2060 Super. Currently have a rocker with 116 parts loaded with no issues.

I’m using 6.4GB of VRAM out of 8 total

With no rocket loaded I’m getting 115 fps

46 fps on launch pad

60 fps looking down on kerbin

The maneuver planner is a lot easier to use.

Currently deorbitting with 35 fps looking at kerbin from about 50k meters up

Still only using 6.6GB of VRAM

Landing on some mountains with 25 fps.

After planting a flag, I couldn’t control my kerbal anymore.

[small zenith]

@covert salmon how does that compare to your previous results?

[covert salmon]

It’s all significantly better. I don’t remember many exact numbers, but I have an entry in the pinned doc from I think before the first patch? I’m not sure when I did that, but you can also take my specs with my current results and compare it to other entries on the doc.

For most people, the issue has generally been that the game loves to eat up as much VRAM as possible, so the fact that I was able to play with a consistent ~6.5GB of VRAM means that the bar has been lowered a bit. In the last patch, I had the screen-quality flag set to Good and I was still using pretty much all of my VRAM

[final spade]

oh ! IT RUNS WITHOUT WINE3D !

[minor apex]

I'm actually getting over 40fps in the VAB editor, up from 10fps

I mean, WOW!

I'm also getting around 35 fps in low orbit of Kerbin, making

[chrome plover]

I took off all launch settings (except skip launcher) and I am also running it just fine. Great to not have to use the launcher settings anymore, I hated how it messed up the xs fuel tanks, and I also like seeing the tree from a distance.

I do keep my settings on low though

[obtuse nimbus]

How do you get steam to run ksp 2 without the launcher breaking?

[gray igloo]

Just logged back in after last attempting to play on launch day and to my surprise it’s actually playable on my steam deck now. Amazing quick work on the optimization!

[obtuse nimbus]

I got the game to run on linux. oh god it's not running great

[acoustic tartan]

after patch 2 i dont realy notice many improvements

[covert salmon]

What are your specs? If your graphics card has less than 6GB of vram or already had ~10GB or more, then you probably won't see much difference.

[acoustic tartan]

Rtx 3060

[sterile stone]

i can now play the game at 30 fps

before it was like 6

[acoustic tartan]

like it seems a little more stable

i hit 15 fps now

more consistantly

but not that large of an improvement

so like from a plane launch

my framerate went from

5->10->15

[chrome plover]

Wanted to add on, I started getting issues at night time when I am at KSC. Not 100%, but I assume it has something to do with the light sources in this case.

During the day I still get good frames

[minor apex]

The biggest improvements are in orbit. I get to 40fps-60fps in high orbit.

Anyone having trouble with the launcher crashing.

[minor apex]

I was looking into the issue. It seems that Valve pushed updates for all their proton versions 7.0 and later, and some people have had problems with a few applications, especially in Experimental and the new 8.0. The problems seem to vary by video driver. I may have to resort to wine-d3d or skipping the launcher.

I'm sure that some other Private Division games have run into trouble as well and Private Division is working hard on it. Valve is already too as it hit their default config for a few other games. It only broke a very small number of 7.0 relying games, and broke more that were configured to latest or experimental. Most people are reporting a handful of their games not working. Problems include DXVK issues, Mono and various other libraries. I will look into detail later if it doesn't fix itself.

In the meantime I now know that Valve is aware and is working with all willing developers to fix it.

I find it SO annoying when these problems only affect some users on specific hardware and/or software configurations. BTW.

However, these issues are much more likely to hit non-mature products, like KSP2 and the Private Division launcher, as well as problematic.

[minor apex]

OK, the issue seems to be on Private Division side.

The error log reports an SSL Error 1. It seems they have a certificate issue.