Enable 120Hz in Oculus settings, then go to advanced settings of DeoVR player.
Also fixed flickering when Tracking OFF on Quest2.
Please let me know how https://sidequestvr.com/app/1347/deovr works for you now.
If everything is fine we should release Quest store version some time next week.
Because we updated core components Oculus Go and Gear VR headsets won't work any longer as they are deprecated by 2019 FB SDK.