Disable Hardware Accelerated Graphics Scheduling (HAGS)
it fixed the hitches for me!
R7 5800x3d Asus Rog watercooler an Rtx 5080 zotac solid oc with 32gb DDR4 Ram @ 3600mhz. Quest 3 with all the vr optimizations done dlss etc.. From the Steam forums and even I can't get stable frame rates at 80fps on this game. It works if I make it look like it's being played on a potato. I get stutters right around the middle of the stage and it drops a lot. Also my gpu is never above 70% usage. There is no way my CPU is a bottleneck when it runs every other game I have a 4k amazing fps.
For the record even on Assetto Corsa Competizione I can achieve a stable 90fps with near epic settings at the same resolution. I don't think they really care. The worst thing codemasters have done was sell this title. If you can get dirt rally 2.0 I would do that. That can be ran maxed out at 120fps. At least on my pc.
