Low FPS in Vtube Studio

[errant marsh]

Hello!

I have been using Vtube Studio for years now at this point but I use different models. I noticed I was getting very low fps on a recent model so I went to check other models I have and I average around 38 fps on my models. The current one I use is floating around 29 fps. I tried the basic Akari model to compare and that runs at 59 fps. This is the fps without anything else running.

I have:

• Set my nvidia control panel to for sure run at 63 fps for vtube studio
• My rig is running a Ryzen 7 3700 8-Core / Nvidia Geforce 3070 / 32 GB RAM
• G-sync is not a thing on my device
• I pair with using an iphone to track- vbridger+ifacialmocap
• Both my monitor's refresh rates are at least 75 hz.
• I have tried running vtube studio without steam
• I have tried setting Vtube Studio to Realtime Priority in task manager.
• My CPU and GPU say that at most they are running at 40% with Vtube Studio open.
• It's not the model because others are reporting higher fps (this is a customizable).

[verbal dagger]

Did you try reinstalling vtuber studio

C:\Users"YOUR-USER"\AppData\LocalLow\Denchi

delete thsi fodler

also unisntall vtube studio from steam and install it again

as well as well make a copy of all the folders

and everything you ahev inside a copy somwhere else in your desktop

[errant marsh]

This seems to have increased it by .5 fps.

I uninstalled Vtube Studio and deleted the Denchi folder.

Is there anything else I should delete?

Does having a lot of models in the Live2dModels folder create issues?

[verbal dagger]

yes having a lot of models sometimes generates lags

apart of taht is mostly jsut models being unoptimized

[errant marsh]

okay I'll try cleaning out the folder of models I don't use

and see

[errant marsh]

Nope not really any better with cleaning out some of my other models from the folder.

Does this tell anything

Suiika model for example says the in the logs= [live2dphysics] measure avg physics fps for model is around 45 fps and that matches the fps I see over time in the top left corner.

This model I'm picturing says an average of 29 fps in the corner over time but is reporting [live2Dphysics] is 60 fps on average. Why are those two fps so different?

[verbal dagger]

That is model optimization, artmesh quantities, mask permutations mostly

[errant marsh]

Gosh I'm so lost on what to do about the fps. Is there any more info I can provide?

Can the iphone affect the fps of vtube studio on my computer?

[verbal dagger]

No, it will jsut lag the tracking

[errant marsh]

What do you mean?

I currently use an iphone XR with ifacialmocap into vbridger for tracking. Is that causing lag?

[verbal dagger]

no, the iphone will not cause lag, it could get just lagged tracking (like the model moving snappy) and the solution for that is just a better connection iphone to the pc (wifi)

[errant marsh]

I still have no idea what is causing this since my gpu is literally at 4% usage when using VTS which tells me I don't think my gpu is properly applying to VTS.

There is the possibility too much VRAM is being used. In which case I came across this video posted more recently:

https://www.youtube.com/watch?v=ZxXT2EBpFuE

[verbal dagger]

the problems of fps it can be vram but in your case i think is your cpu, also it depends of the model

[errant marsh]

CPU says 20% usage...

hmm

do you think a higher thread count or higher refresh rate should be prioritized when looking at CPU?

https://www.pcguide.com/cpu/guide/best-for-rtx-3070/ I found this article...

[verbal dagger]

check per core

like this

and probably one will eb at 100%

[errant marsh]

why is it not evenly using cores?

[verbal dagger]

no app will never use evenly the cores

[errant marsh]

(this is with vtube and vbridger open)

so this does look like CPU needs to be changed out then?

hmm

i have an asrock B550M motherboard which may limit me on what CPU I can change to

[verbal dagger]

you are using a 7 years old cpu to be fair

[errant marsh]

oh. so it's just a matter of old age?

I see

so if I got a today-o'-clock same ryzen it would be fine again?

[verbal dagger]

mostly because the lag happens even on my end with a 7900x i have the same issue with the program jsut using certain cores

it is jsut the normal cpu behavior

it will be better not exactly fine

[errant marsh]

:/ hmm I just want to figure out what part I needa replace to boost my fps which is running around 35 fps with my model and it's a customizable and I am aware that other people run it at 60 fps. I don't need the fps to be perfect, I just wanna know which part will give me the biggest change I guess

[verbal dagger]

from your specs yes your cpu is the worse thing you ahve

[errant marsh]

suiika model runs at 44 fps for me for example

ah

okay.

[verbal dagger]

yeah but usually customizable models are not well optimized because

[errant marsh]

noted.

[verbal dagger]

they have everyhting running at once

even normal model can run well but way too big models will work laggy

[errant marsh]

true. but if so many others are running it at 60 fps then I resort to acknowledging something is wrong with my build also.

[verbal dagger]

with your same specs?

[errant marsh]

Nope they have better specs most of them.

[verbal dagger]

yep... your cpu is the biggest bottleneck right now

[errant marsh]

Alright! I usually look to upgrading one part every year to two years anyway. Last year it was RAM.

Thanks for the advice!

[verbal dagger]

5800x3d if you can should eb compatible with your mobo

or a 5900x

[errant marsh]

Ryzen 5900x or Ryzen 5900x? is that what you are refering to?

[verbal dagger]

Ryzen 5800x3d or Ryzen 5900x, any of these 2 the x3d should work better with games

[errant marsh]

Does the AMD Ryzen 9 5900XT work for this?

Still with my asrock b550m itx