I wanted to report this issue still exists with 4000 series Nvidia Graphics cards and Meta Quest. That original Oculus tray tool that had a setting to turn off Asynchronous Spacewarp seems to have been discontinued for development and their site is down. I saw it on another site but ran the .exe through virustotal and it has malware so be sure to check if you download it somewhere and use it.
I posted in this guide at the very bottom on how you can turn it off...
Guide: How to Set Up Virtamate (VAM) in VR with Meta Quest Beginner Friendly, SteamVR Method There are ways to run VAM in VR without Steam, but for first-time users, who want to just use free software to get it setup to try it out, this is the...
hub.virtamate.com
I will share that info here in this thread as well for anyone with this issue..
Nvidia 4000+ Series Graphics Cards
If you are on a 4000 series Nvidia Graphics card (e.g. 4090), there have been reported issues of black line flickering or screen tearing issues with Meta Quest. This has been reported by multiple users.
This can be resolved by turning off:
(PC) Asynchronous Spacewarp
Open the Oculus Debug Tool
Location:
C:\Program Files\Oculus\Support\oculus-diagnostics\OculusDebugTool.exe
In the window that opens, look for the setting for:
(PC) Asynchronous Spacewarp: Auto
Set it to Disabled.
You
do not need to restart Oculus or your VAM to see it take effect. If you see the flickering instantly go away, you will know that this is the cause. The setting
change only applies while the Debug Tool is running unless you automate it with CLI or a startup script. It resets every time you reboot.
What you can do is open your VaM (OpenVR).bat file that you use to launch VAM in VR mode by right clicking on it, click Edit to open in NotePad, and add CLI code to turn it off before launching VAM. However Quest keeps updating their software to not work with old CLI commands.
* I'm still double checking cli code as from what I am seeing old code that worked, no longer does because Meta updated their code/commands and is not providing documentation. So a lot of cli commands online no longer work with the latest version of their software. I swore it worked on the first run I did with it and then I tried again and it did not work.
* So a workaround may be to to use a non-Oculus Quest alternative like Virtual Desktop which can run without Oculus Quest desktop software.