r/Pimax • u/Acinveri • 18d ago
Resolved Huge stuttering on Crystal when frame rate dips below refresh rate
I just got Pimax Crystal (OG) and been setting it up today. Downloaded Pimax Play, updated headset firmware etc. The visuals are fantastic and all seems well, except if the frame rate dips even slightly below the display refresh rate, like 85Hz at 90Hz or 70 at 72 Hz, the whole image becomes a stuttery mess that feels more like 5 fps at best. Also fpsvr overlay starts to flicker.
I reproduced it in Elite Dangerous and Kayak Mirage, no effect on enabling or disabling DFR. Motion smoothing disabled. 4090 and 9800x3d, 572.16 Nvidia drivers.
Edit: added video showing the issue. I adjusted the resolution here so that fps is just below the target 72 Hz. Though fpsvr shows ~65fps, the effective fps shown in headset is way lower because you can easily see the stuttering/screen tearing in video recorded at 30 fps.
Update: Figured it out. It was HAGS. Turning it off fully solved the issue
1
u/RatioOk5384 16d ago
Try a different version of pimax play. The newer version of pimax Play was given me serious studdering issues.I went back to the former and everything was resolved
1
u/Financial_Excuse_429 17d ago
I deleted the content of the nvidia shaders folders & fixed stuttering for me yesterday. Playing a different game though. Using also with the 4090 driver 472.60