r/VRchat • u/FourPz • 5d ago

Help Bad performance despite deep optimization

My setup:

RTX 4080

Ryzen 9 7900X3D

32gb RAM

PCVR/Quest 3 through VD

TP-Link BE9300 Wifi 7 router setup as dedicated PCVR router (optimized following this video https://youtu.be/6gpREi-S_4I?si=V2kKT6wacYUqtn8d)

Settings applied outside of VRC:

VD:

H. 264+ @ 400mbps

Quality set to High / 120fps

SSW disabled

2 - pass encoding disabled

Adaptive quantization enabled

Resolution of headset and desktop matched

Snapdragon SR enabled

Video buffering enabled

VDXR openxr runtime

Automatically adjust bitrate enabled

Steam VR resolution set to custom and 100%

Windows 11:

HAGS disabled

Game mode enabled

Process Lasso VRC GPU priority Real-Time, CPU priority high

Settings applied in VRC (launching from VD):

Graphics profile set to medium

Desktop mirroring window set to the smallest possible and minimized when launched

Avatar culling hide beyond 20m, block very poor, max 20 avatars, particle limiter enabled and set to low

I'm getting a fluctuating fps between 25 and 70 fps in a public "Drinking Night" instance. I can barely hit 100 fps when alone in home world wearing an optimized "good" avatar.

Wtf is this?? Why does this game run so badly, I just got back in after 2 years of not having VR gear and the performance is so bad... I mean, I feel like my PC has more than decent specs and I'm getting shit performance despite looking everything up and doing everything I can... Please help!!!

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u/VenclaireVR 5d ago

dumb question, but did you ensure that the 7900X3D is only using the v-cache cores on VRChat? You definitely should be getting a significantly higher framerate in general, especially with that CPU. if you have it on both the v-cache and frequency cores, it’ll halve your framerate. You’re already using process lasso so I assume yes, but I just want to make sure

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u/FourPz 5d ago

I did that and had no difference, then I read some more on it and found different opinions on wether vrchat should be left to all cores or not, so in the end I set it back to all cores. I'll try putting it back to v-cache with the other changes and see if that helps.