Pavlov

Performance Issues

If you are getting WAY not enough performance (EG 30fps when it should be 120fps), chances are you're suffering from the OpenXR Hand/Face Tracking bug. This can affect you even if you aren't using a Vive headset. It happens if you have the Vive drivers installed.

Problem: Dave didn't disable face/eye tracking in UE so the game makes calls to the OpenXR Vive Hand and Face tracking APIs every frame, slowing the shit out of the game. No he won't fix it.

Solution:

First try going to steamvr settings, openxr, layers, then turn those two off

Alternative solution:

If you don't need face tracking (which you need if you're using vive face tracker or some derivative tech) Delete/rename the Vive openXR addons. Something like: Steam post

EG:

Vive Console folder:

F:\steamlibrary\steamapps\common\VIVEDriver\App\ViveVRRuntime\ViveVR_openxr

Folders with OpenXR addons to rename

ViveOpenXRFacialTracking_back

ViveOpenXRHandTracking_back

ViveOpenXRSRWorks_back

Most likely on Vive Console update you'll have to do it again.