What does "Optimize game render latency" do?

[jade merlin]

This might sound crazy, but without this setting enabled. ALVR is basically unuseable, no matter what other settings I configure.
Not only does it clean up the image immensely, but also it feels like it smooths out stutters a lot. Anybody have the same experience? 🤔
Using a Quest 3 (same experience with Quest 2) + ALVR + SteamVR.

If it's turned off and I have massive stutter issues, what would that point to?
Desktop PC is running a** 4090** and generally good setup so that shouldn't be an issue.
Tried various default settings in ALVR but to no avail.
Also I should mention, there's still a bit of stutter even with the setting but it's a massive improvement, but I thought it might hide another grave issue I have which I couldn't find yet.
Oh and I also set motionSmoothing to false in the SteamVR settings file, sadly didn't do much.

Would be happy about any recommendations. 🙏

[strong brook]

where is that setting?

[distant falcon]

I don't understnad this ticket. this has been a big point of discussion in v20.12 because first we removed the option, and then added it back with a different name. it was removed in v20.12 by me exactly because disabling it created stutter and a lot of network issues. then it was added back i v20.12 with a different name because somehow it's actually better to leave the option off if the game can't reach the target refreshrate (this issue would be better be mitigated with a future feature)

@jade merlin so my main question is why are you using an old version of ALVR?

[jade merlin]

because when we started validating ALVR. 20.8.1 was the newest version. also it’s from last year so not suuuper old I’d say?

can test the newest version tomorrow and report back. 🫡
still would be interesting to understand what it does, even if it’s obscuring an underlying issue.
really at wit’s end though what else I could try. Using Unity 2022 with their XR packages and templates out of the box and moving from left to right is already a pretty jittery affair.

(really doesn’t seem to matter what VR app I’m trying though)

target fps easily reachable on both devices

also using PrismXR on 5Ghz and a dedicated channel.

[jade merlin]

yes.

it’s from last year.

will take some screenshots tomorrow 🫡

[jade merlin]

Would love to always stick to the latest one, but sadly that's not possible.

[jade merlin]

launcher? 🤔

[lilac haven]

https://github.com/alvr-org/ALVR/releases there is a launcher now - you should try this out - it specifically helps you manage versions

[jade merlin]

cool, will check it out ☺️🙌🏻

[jade merlin]

Ok just tried it with the latest ALVR version, sadly no change really.
Made some screens while moving a bit faster from side to side (when the stuttering occurs).
Settings are default + medium resolution preset. Resolution in SteamVR is 100%.
App was Unity 2022 running the XRIT sample scene (bare bones and pretty empty).

[distant falcon]

Your graphs look normal-ish. I think this is just a problem of no phase sync in ALVR, which sometimes causes the frame buffer size to go too low and you see stutters

[jade merlin]

Hmm, thanks for checking! And I guess there's nothing I can do on my side for that? 🤔

[jade merlin]

nope, all on default

should I play around with it and check if this could improve it?

[urban mason]

I think i have the same issue as you

its very random

I can move sometime side to side for 3-4s then it start to micro stutters

i have a screenshot of the graph

it happens whatever the settings, bitrate

you can see the flat part of the latency graph is when its smooth, then it start to stutters

i tried at 90hz with my screen refresh rate set to 120hz and my headset set to 90hz with sidequest but it changes nothing

[lilac haven]

try hevc?

[urban mason]

same thing

it happens whatever the settings

[urban mason]

The thing is it doesn’t happens on virtual desktop for exemple

Airlink I can’t tell since it’s not working anymore on my pc even after re installation

But even if it was decoder latency then why at 5mbps and all the nvenc settings turned down, it still happens

As for the network I have an AXE75 router nicely configured free of interference with a faraday cage

I tried to dual boot a second clean windows installation a month ago but the issue was still there

I tried to switch to TCP, change history size, change packet size etc etc but I couldn’t get the issue fixed

I can’t test to see if the issue is present while being wired (because I don't have a link cable), but my friend who might receive his quest 3 today will test with an iniu link cable

I also tested to disable/enable HAGS, Resize Bar, XMP

[urban mason]

maybe its this phase sync thing ?

[lilac haven]

virtual desktop will cap your bitrate

and lol you put your router in a faraday cage? ok...

for network stuff just make sure to use hevc and not go over 200megabits - which should not be problem

[urban mason]

Yep

It’s only when I start doing 6DoF movement

Yep

But less noticeable

I don’t have cable so I can’t try

Oh okay yeah then I can try

[urban mason]

I can hit their maximum cap of 500Mbps~ for the quest 3 smoothly thanks to the faraday cage, but it looks bad because they don’t use efficient settings on h264, that’s the main reason I’m using alvr, because I’m a power user and I can’t stand the limitation of vd

But it doesn’t change what I’m saying : whatever the settings it stutters

Gonna check with a cable in some minutes

[lilac haven]

500mbps is not the cap for h264 - you should be using 800+

and u should use hevc with 200 cap anyway

[urban mason]

It’s the cap on VD

[urban mason]

Looks atrocious lmfao

[lilac haven]

that means something else is wrong - it looks great to everyone else

[urban mason]

We don’t have the same standard for quality

[lilac haven]

probably sounds like user is doing 200megabit h264 and getting confused

[urban mason]

Nop

[lilac haven]

alvr devs are video streaming engineers

[urban mason]

And just better in general for high complexity scenes

[lilac haven]

i disagree with this and have done many experiments

it depends on your hardware

modern nvidia h265 works just fine

and say noisy is rubbish - talk about entropy

[urban mason]

I think the worst scenario I’ve encountered is SkyrimVR

[lilac haven]

compare against a displayport headset for starters

[urban mason]

It’s extremely hard to encode

[lilac haven]

streaming headsets are not good for high entropy scenarios because of this decode limit

only at the highest end

like with 4k 240

for a vr headset is DSC also used?

at high end its lossy, and at lower its lossless right?

anyway - still nothing compared to streaming to headset

cyberpunk looks great on displayport monitor - not so great when streamed to quest

i ordered that PCL btw

i broke my dualsense controller, now i cant play cyberpunk 😦

back to vr

yeah we all give up on trying to read text properly in vr

anyone saying its good for software engineer is just wrong

maybe if you zoom in really close

for microsoft flight sim its critical to use the zoom button to be able to read any of the instruments, even with quest3

even with PCL will still need zoom

yeah - reading small text on instruments, similar to reading text in terminal or code - doesnt work well with any vr really

[urban mason]

@pliant ermine still happens even wired (I used my valve index controller usb cable)

its smooth longer tho

i was able to make side to side movement for like 5s before it started to "stutters"

then its become smooth again after sometime

then it restarts to stutter

I have this issue since I use alvr (so since october 2024)

If I could find a solution, or if the issue could be fixed alongside the colorspace issue, it would be perfect

And it's always the same type of visual in the latency graph. My hypothesis is that it might be a VSync issue or a frame pacing issue, I don't know. It happens everywhere (SteamVR void, in games)

[lilac haven]

thats a good test - if you get same on index then this has nothing to do with alvr or video streaming

might be HAGS related or something other

wait

you didnt use valve index

only controllers

[urban mason]

no i mean i used the valve index cable to be wired

[lilac haven]

do proper test with valve index and that would really show

[urban mason]

i don't have it anymore i sold it but I didn't have this issue

And like I said i don't have this issue on virtual desktop

[lilac haven]

quest being wired means nothing - it always does same video endoding

virtual desktop has better UI - easier to set right stuff

in alvr you can get same result - just use the easy presets and dont click random things

high preset - 90fps - hevc - probably works fine

[urban mason]

also, as you can see the server fps are rapidly fluctuating, might explains something?

[lilac haven]

reset to defaults and start with normal options

or try different version of alvr if you think there is a bug here

start by getting something easy to work with smooth performance - like beat saber

[urban mason]

i've been jumping from nightly to nightly since october

[lilac haven]

lots of us can run beat saber with alvr on both windows and linux - and it works great

with no exotic settings - just use the presets

its very difficult to test if you are using exotic options and different builds all the time

cant even trust steamvr to apply your settings without rebooting whole pc

[urban mason]

I don't mean to be rude, but I've already explained that this happens regardless of ALVR settings. I'd appreciate it if you could stop talking to me in a way that seems condescending, and sorry if that's not the case, but that's how it feels

[lilac haven]

why do other people not have this problem?

and wny not use normal default settings?

its entirely possible there is something exotic about your setup - but what is it?

[urban mason]

people were not talking about the color range problem but it was here and I've been the only one to talk about (and it got fixed)

[urban mason]

this happens regardless of ALVR settings
This include the default settings too

[urban mason]

I will see with my friend when he get his quest 3

[lilac haven]

i have the same hardware as you, and test on both linux and windows - what specific problem is it? what test case?

i have index, quest2 and quest3 and can run many comparisons

my idea of "works great" on windows - is when alvr works as well as VD does btw

and then on linux i try to repeat that - but linux has its own special issues

stuttering can be caused by HAGS or just steamvr rly wanting you to reboot coz of zombies

[urban mason]

More or less the same with the colorspace issue, it's been around for ages, and the discussion about it only restarted yesterday when I brought it up again. Other than that, no one had really mentioned it, except for a GitHub issue back in 2021

[urban mason]

#1336788604843724891 message

[lilac haven]

some other program is interfering and causing it

could be overlays or recording programs or other

[urban mason]

I also tested a clean install of windows in dual boot

with nothing except the drivers and alvr

[lilac haven]

i had this problem for a while but it went away - it was some nvidia thing

had it on linux as well

nvidia problems on linux are just normal tho

is it vrchat you test? coz that is never gonna run smooth

[urban mason]

no

i said it happens everywhere (steamvr void, games)

[lilac haven]

does it stutter even in the steamvr void doing nothing? ok

yeah thats exactly the little nvidia stutter i had for a while

on linux it was caused by their open drivers not supporting HAGS or something

[urban mason]

my friend is on amd so its gonna be a good test

[lilac haven]

fixed by using closed drivers and setting some kernel option - windows basically has similar option i think

and if you use latest shouldnt be issue

[urban mason]

I have latest nvidia driver using nvcleaninstall

[lilac haven]

dont use dubious third party scripts

maybe you can set some option in nvidia control panel to help here

[urban mason]

like which one

[lilac haven]

google some vr optimisation guides for windows and there are some suggestions

i mostly use linux

[urban mason]

they always repeat and say the same shit i already know or tell users to use placebo registry shit

[lilac haven]

thats often true - but there are some relevant settings in there

[urban mason]

i tried to play with the vr pre rendered frame setting in Nvidia control panel but doesn't fix the issue too

[lilac haven]

i have vr pre-rendered frames set to 1 - ill fire up alvr and play some beat saber

the awkward part is i only boot windows for flight sims, and only use VD with it because it has special option to bypass steamvr

[urban mason]

but the issue doesn't trigger when you're static, its only when you start moving physically in 6dof

[lilac haven]

thats either tracking or entropy related then

moving as in turning head a lot so it causes overload?

or just tiny movements because noone can actually stand still?

[urban mason]

the easiest way to see it in action is just to move side to side and look at something

I can't record it from the quest itself because recording framerate isn't high enough

[lilac haven]

and your statistics graph can show the cause of the stutter? latency or ?

game render spikes?

[urban mason]

I'm repeating myself, but eh:

When I start moving side to side, it's smooth for about 3-4 seconds. Then the stutters gradually become more noticeable, keep increasing, eventually disappear after a while, and then start again

and the sutters ALWAYS looks like this in the graph

[lilac haven]

try using boring defaults -> high preset, 90 fps, hevc encoder

and touch nothing else

i will post mine shortly once i install latest nightlies

[urban mason]

it happens whatever the settings I said it.. I've been trying all the combination possible for month

[lilac haven]

i want to compare yours to mine with same settings, we have same gpu

[urban mason]

But do you think the server framerate fluctating like this is normal ?

[lilac haven]

yes mine will look similar to that

always little bit of fluctuation

[urban mason]

okay

so, default settings, 90fps hevc high preset

[lilac haven]

must reset to defaults

[urban mason]

yep

[lilac haven]

installation -> setup wizard, first screen lets you

or can delete json file or whatever

you can backup your old settings this way too

just copy file or rename

best to close steamvr first

[urban mason]

what is your main screen refresh rate ? I have one screen and i've set mine to 120hz since its divisible for 90hz

[lilac haven]

i have 240hz monitor but doesnt rly matter

steamvr at 90, headset at 90, dont use overclocked mode on headset

[urban mason]

yep

[lilac haven]

steamvr super sample slider on auto

[urban mason]

uh not sure about this one but okay

[lilac haven]

then close steamvr

[urban mason]

encoder preset to "quality" ?

[lilac haven]

i am just lazy and using defaults

[urban mason]

because you set high preset

[lilac haven]

the important ones are high,90 -> hevc

[urban mason]

oh you're talking about the res

[lilac haven]

the presets are pretty much designed for quest2 - it should work for you

and quest3 is almost same

i got latest nightly 02-07 installed on both and need to confirm and test then look at statistics

[urban mason]

still happens

i'm not even in game

i started moving side to side for like 2s

[urban mason]

i have 02-05 but there was no commit since then iirc

[lilac haven]

should be fine

make sure to match both sides ofc

[urban mason]

another screenshot, it was smooth again (you can see it on the far left of the graph), i moved then it started again then its smooth again a bit (far right of the graph)

and as you can see its the exact type of stutters visually

was smooth again then boom stutters gradually increasing

[lilac haven]

perfectly smooth in the steamvr home

[urban mason]

what is your os ?

version/build

what steamvr version?

[lilac haven]

win 11 updated

no funny stuff

steamvr 2.8.8 not beta it seems

7800x3d+4090 same as everyone else has

except richer people that now have 9800x3d and 5090

[urban mason]

starts again

[lilac haven]

if it works ok for a while - but then problem happens.... this makes me think power or thermal related

[urban mason]

from the headset?

[lilac haven]

usually its pc...

is your room very hot?

[urban mason]

nop

very cold

window open

i'm living in the north of the earth

[lilac haven]

my pc crashes a lot - its overclocked to hell, and the cat sits on it and crashorama

yeah im in a wet cold place here too

[urban mason]

mine is fully stable, no oc or nothing appart from default exp

bios updated

[lilac haven]

default xmp = overclock = not stable lol

despite what everyone thinks

[urban mason]

i'm still on ddr4 (am4)

not the funny ddr5

[lilac haven]

older amd platform was shit as well

unstable memory always

but we put up with it

[urban mason]

but the most important thing is : it doesn't happen on virtual desktop

[lilac haven]

this not related to your issue tho i guess

did you really properly reset your ALVR settings? why would you get difference experience?

[urban mason]

can't say the same for airlink since it refuses to work

[urban mason]

yep

i can send you the session thing if u don't trust me

[lilac haven]

i cant discount that i have set some funny nvidia option or something

[urban mason]

my nvidia option are fully default

[lilac haven]

i do believe you - i am trying to find out why we have difference

[urban mason]

i can try to install the nvidia driver without nvcleaninstall

but why the hell would VD doesn't have this issue

[lilac haven]

stuff like "nvcleaninstall" is peak windows cargo cult bullshit

[urban mason]

😭

[lilac haven]

if you want to REALLY install nvidia drivers then you gotta use linux lol

what is the yellow on graph when problem starts?

[urban mason]

nah most of my shit doesn't work on linux and i don't have the time to find alternative or make something work while windows is good enough lol

[lilac haven]

frame buffering? why would that be increasing?

is your network not keeping up?

[urban mason]

yep its frame buffering

[urban mason]

it can't be this

[lilac haven]

i have pc -> gigabit ethernet -> router -> wireless -> headset

you would be surprised - fucking routers

a single smart home device can make your vr stutter

[urban mason]

same setup

6ghz, no interference, faraday cage

[lilac haven]

wtf is this faraday cage - you cannot be serious

[urban mason]

wait

[lilac haven]

this is like dreamcatcher rubbish

any of these things that claim to be "wifi boosters" will just destroy your performance

[urban mason]

from vd server

[lilac haven]

peak cargo cult nonsense

[urban mason]

well, no

[lilac haven]

we only need to do 200mbit hevc

[urban mason]

without it i had infernal interference

[urban mason]

no bro its aweful

[lilac haven]

this finfoul just causes reflections and more interference

perform a simple experiment without the cargo cult stuff

the biggest factor is mixed mode settings on router

if it beacones in 2.4g that will cause stutter

even if no 2.4g clients

[urban mason]

this is 200mbps hevc with the test settings you gave me

💀

[lilac haven]

i did not tell you to set 200....

if you interfere with this it will cause bad performance

reset to defaults, high preset, 90fps, hevc encoder - dont touch bitrate slider

your decode is too high there which is a sign of too high bitrate

[urban mason]

it was just to show you the performance at 200mbps lol, anyway even with the test settings of yours i still have the same issue, because as I said and tested, it happens whatever the settings

[lilac haven]

can you show a screenshot with the settings suggested?

only then is it a valid comparison

and after a full reboot

also disable microphone for test - not sure if there was some bug there that might interfere

(mine is disabled)

[urban mason]

My patience has limits. I can send you the session file if you want like I said

[lilac haven]

that wont show the statisticis for comparison

but it seems to be frame buffering when it happens

not sure why that is happening is all

sounds network related

would ask if you were doing anything "unusual" with yoru wifi - but yes it seems you are

[urban mason]

Of course when I try to record the issue, I can move side to side for a longer time before triggering it 💀

https://cdn.discordapp.com/attachments/992019265836290082/1337800583586906174/alvr.client.dev-20250208-154512-0.mp4?ex=67a8c362&is=67a771e2&hm=94f17ce03cbb068dc25d767bb59ff75e36d845f72a6619c1aa554b1c9f537093&

@jade merlin can you tell me if you have seen such pattern ?

#1336788604843724891 message

and #1336788604843724891 message

[lilac haven]

at what point in the video did it start to stutter? its difficult for us to tell from the vid

[urban mason]

you cannot perceive it in video because the recording framerate isn't high enough, you can see the graph at the end

i did the video to show you the settings

that i'm not lying and its what you said me to use

[lilac haven]

thats ok we just need to confirm all this stuff and reproduce it

i was using quest3 but if i did same with quest2 it shouldnt matter?

[urban mason]

i'm gonna try to use cpu/gpu level 4 in sidequest

[urban mason]

at this point I don't really know what is the culprit

i'm waiting for my friend to receive his quest 3

[lilac haven]

we are not stressing the headset just looking at steamvr home

if you drop to low preset does it still stutter?

coz that should be easy potato settings

[urban mason]

yep, but i can test again just in case

but remember on VD it doesn't stutters and i'm using ultra res 500mbps h264 (but their h264 looks shit thanks to inefficient settings)

[lilac haven]

was just wondering - so its not coz we are overloading anything

try close other VR software that might interfere - like meta stuff

[urban mason]

i have uninstalled meta link

[lilac haven]

i do have the VD streamer active in taskbar, but it doesnt interfere - i dont have any meta stuff at all

[urban mason]

it spam millions of file in C:\

[urban mason]

yep me too

[lilac haven]

also disable steamlink - that might interfere

[urban mason]

lemme see if its active

nop its disabled

[lilac haven]

try turn off any overlay programs - like steamoverlay or nvidia overlay or other

[urban mason]

okay gonna try to disable steam overlay

[lilac haven]

are you using exotic controller setup still? index controllers at same time as quest?

[urban mason]

nop

I don't have my Index anymore, just the USB cable that I forgot to give to the guy who bought my Index

[lilac haven]

i plug out my index and turn off stations etc when using quest right now

make sure its plugged out for testing

[urban mason]

i'm gonna remove most things connected to my motherboard USBs just in case

aswell as the bluetooth dongle even if bluetooth is off

[lilac haven]

shouldnt need bluetooth for anything here right?

[urban mason]

yep

Ok so for the test I restarted both my pc and headset

Everything on the pc is closed, no openrgb, no controllers software, no lghub, no obs, NOTHING

I disconnected my audio interface and the Bluetooth dongle and the usb cable that I use for connecting the quest to the pc

Settings are the same than in the video but with the lowest resolution

I’m gonna try now

well well well look who is here

this damn stutter pattern again

but this time it looks longer to be triggered on the void

again

it really seems random

i'm not even moving anymore

stable again

i didn't move my head, it was perfectly smooth

i moved toward my keyboard to take a screenshot, it started acting like crazy

and its always the same damn pattern

[balmy dagger]

absolutely

all nvenc encs have noise handling issues but currently h264 is the least atrocious out of them

[lilac haven]

this is not about noise or quality, its coming from something else

[lilac haven]

what you described sounds like interference patterns in your wifi signal

[urban mason]

but then why on virtual desktop i don't have this issue ?

[lilac haven]

it is using better buffering maybe

and is more resilient to transient network problems

[urban mason]

hmmmm

cannot be network related since it happened on cable too

[jade merlin]

for me it always happens not after a while. moving side to side or even just moving the controllers side to side it get’s a little stuttery.
thought the game render latency might have been a cool indicator, as with it off, it feels like you’re “drunk” in vr and the tracking is way off.

[urban mason]

i tested when plyshka told me to

[lilac haven]

is your play area well lit?

[urban mason]

yep

[lilac haven]

the quest does not work well at all in low light

maybe clean the cameras on it

[jade merlin]

I’m not using a faraday cage, just one dedicated router (PrismXR Puppis S1)

we have tried these setups and different settings in the whole company and it only happens if we introduce ALVR into the mix.

[urban mason]

i have plenty of ambient light coming from the windows + little ambient lights in my room

[lilac haven]

if you guys are stuttering at potato settings then the problem is not related to video encoding or performance

well it is - but a different kind of performance

[urban mason]

i don't have overheating issue on my pc, everything is well cooled and clean

[lilac haven]

if its an alvr bug then there must be some older working version?

[urban mason]

i can try very very old version then

since the issue is there since i started using alvr in october

[lilac haven]

i just tested with latest nightly here - i can bring down quest2 and repeat it but i dont expect different

[urban mason]

do you have a quest 3 at hand ?

[jade merlin]

I’ve always had this issue, even on older versions, but because of compliance reasons I can only use ALVR

[lilac haven]

the stuff i posted earlier was with quest3

[urban mason]

oh okay

@jade merlin what nvidia driver do you have ?

[lilac haven]

572.16 here

[urban mason]

same, but with nvcleaninstall, i still need to test with the vanilla installer

[lilac haven]

that clean driver stuff has not been a thing for like 20 years lol

[urban mason]

but still strange that VD doesn't have this issue

[jade merlin]

have to check on Monday, but it didn’t really make a difference for us. Used a validated one from a year ago and the latest one.

[lilac haven]

my suspicion is small network hiccups are being handled by VD better

and you get hiccups with usb as well - it sucks

[urban mason]

I thought it would be because H.264 on their end (VD) is using an old ass API instead of the driver api directly, but no, since even HEVC and AV1 don’t have the problem

[jade merlin]

btw. thanks for still taking the time @lilac haven

[lilac haven]

i try to help - and am curious about this

[jade merlin]

having this issue for a year now and I’m a bit demoralised

[lilac haven]

FWIW i ordered a displayport headset because you cannot do high fidelity high performance vr over this streaming stuff 😦

[urban mason]

me too because alvr would be really the king if i didn't have this issue

the colorspace issue can wait

FFE has been fixed mostly

[lilac haven]

alvr is using the same techniques as all the other programs, all the same tricks - all relying on AMD or nvidia encoder libs

[jade merlin]

FOSS and Rust. what’s not to love ❤️

[urban mason]

i was really happy when i saw the pr

[lilac haven]

alvr maybe has more tricks - but is more difficult to configure

none of this helps if you guys stutter with potato settings tho

[urban mason]

ye

[jade merlin]

yeah I know

tbh

the stutter is noticeable

[lilac haven]

i feel your pain (lol linux)

[jade merlin]

but you can still use ALVR

[lilac haven]

on linux you can ONLY use alvr almost

[jade merlin]

so it’s not a complete dealbreaker

[lilac haven]

at least on windows i just use VD

[jade merlin]

just annoying

[urban mason]

Btw to counter the low res / aliasing of the foveated area, maybe applying a slight blur could help ?

I suppose it's what they're doing on VD at least because the transition is very smooth

[lilac haven]

the defaults in the latest nightly seems fine to me - i only increase center area tiny bit

if you stutter on potato settings FFE will not matter

[urban mason]

Nah i'm just talking offtopic about the ffe

to improve visually the actual pixelated area

[lilac haven]

try check for packet loss on your wifi, i wonder if that is related

and similarly over the usb connection - its basically same

how exactly to find these statistics i wonder tho - maybe router diagnostic page can help

[urban mason]

tried with the vanilla nvidia driver, still the same issue

[urban mason]

alvr stats doesn't indicate a single pack loss tho

[lilac haven]

alvr might not show it like that - it might show as longer frame buffering than usual

and it might not show via speed test either

[urban mason]

I wonder if Zee would have an idea of the problem

he said something about phase sync but i don't know if there is a link

[lilac haven]

why doesnt this happen to me? im not doing anything special that i know of

[urban mason]

true

i also tried to reset my quest a month ago

(did nothing)

[lilac haven]

i did have loads of problems in the past, dont get me wrong - its very difficult to setup - but my alvr seems as good as VD or other

[urban mason]

not that hard when u know what you're doing

[lilac haven]

nvidia definitely has problems with this hags stuff in the past - but seems ok now

[urban mason]

I tried on and off, didn't make a difference for the issue

i don't have VRR tho

[lilac haven]

plyshka they get stutter even with potato low settings

also with both wireless and usb apparently, so wtf lol

so pc itself is stuttering? bad memory?

they could use software encode on very low settings right?

well they should like someone with same gear doing same experiment

[urban mason]

I have an RX 5600 XT in my storage room, I'll try it to see if it "fixes" the issue

I also thought about frame pacing

My friend who has a R7 5700x & RX 6700 XT will receive his link cable tomorrow, he got the quest 3 today, we will see if he get the same issue

I personally have a R5 3600 & RTX 4070 Super btw

[urban mason]

@pliant ermine @lilac haven my friend has the same problem !

wired

[lilac haven]

this is with quest2?

[urban mason]

quest 3

iniu link cable

[lilac haven]

something is starting to throttle after a while, but what exactly is it...

[urban mason]

yep..

[lilac haven]

did u try with not-nvidia?

[urban mason]

he's on amd

rx 6700 xt

[jade merlin]

566.03 but also tried the latest one, no changes

[jade merlin]

btw. randomly found this and this is 5 years old 🥲
https://www.youtube.com/watch?v=oYs5O1-_DxM

[distant falcon]

5 years ago is 100% not relevant anymore

[jade merlin]

Still the same thing we are experiencing with no apparent solution.

[stone jasper]

I have this problem. And I've seen a couple other people talk of it ad well. Random stutters during translational/6dof head movements. I've given up on it until next release.

[urban mason]

yeah the frame pacing issue

[jagged breach]

So this is a known issue? I've been trying to fix this for months, even sent my headset back to meta for a replacement.

When i bought the quest 3 it didn't stutter at all, and then suddenly after a firmwareupdate both my quest 2 and 3 started stuttering like that

https://youtu.be/eCR62yTnxD8

Passthrough used to be buttery smooth, now it's just as jittery

[distant falcon]

Does this happen with other apps too?

[jagged breach]

Yes, but less noticable. Vrchat is the main vr game for me, but i also found it to stutter in titles like alyx, super hot, assetto corsa evo, and even in the Steam VR void

[distant falcon]

no i mean, other standalone apps

[jagged breach]

Yea vrchat standalone, beatsaber, pistol whip

I tried usb again yesterday and it gave me a different kind of frametime graph.

Compared to wireless with vrchat focused:

And wireless with steamvr overlay

[urban mason]

Yeah you have the exact same micro stutter patterns as me and 4 friends who tested alvr, without counting ppl here

I get them both in wireless and usb, whatever the quality, « randomly »

[jagged breach]

I’ve tried several things today and still no luck. I keep changing my mind between it being a headset problem or a pc problem. The yellow frame buffer doesn’t make sense. Why is it choppy?

But then again the stuttering i see in game is exactly the same as i see in passthrough

[jagged breach]

Wait do you have other friends with a quest that don't have the same problem?

[urban mason]

nop

Happens on both Q2 & Q3, I don't have friend with other alvr compatible headsets

[urban mason]

it's an alvr problem

Does it happens with alvr in full low ?

it should but with longer intervals between smooth and stutters

[jagged breach]

No wait this is a quest problem, i also see this in questlink, airlink, virtual desktop and steamlink

[urban mason]

I don't see this in Virtual Desktop

Neither SteamLink

I switched to VD as my main vr streaming software despite not liking their encoding methods

quest link never worked for me so i can't say

[jagged breach]

Hmmm must be more severe for me then.

This is a video from a while ago in passthrough
https://www.youtube.com/shorts/C54EfeBfLTs

Does your passthrough stutter like this?

https://www.youtube.com/shorts/FLTtKzUVhoU

[stone jasper]

That's how my passthrough has always been.

[thin carbon]

This issue is still present btw

Happens on a brand new Q3s on the latest release

I wonder if it's gonna be fixed one day

Tested both in wireless & wired