I’m on a Reverb 1 and I am not satisfied with image quality under VR either. I get tears into the eyes if I compare the lively, life-like image on my (color-calibrated) 2D-screen to the light-grey, flat colors on my Reverb 1. Notably green looks as green on my 2D screen while it looks like poison in the Reverb.
I tried several suggestions for color correction but none of them works on my system.
I understand there are limitations with resolution, FOV and other aspects of VR those days. But color shouldn’t be a performance-critic parameter and could be handled by sliders in the simulator.
I was able to reduce shimmering a bit by using the NIS tool, though. My current settings are 100/100/90/60 (OpenXR scaling/In-game Scaling/NIS scaling/NIS sharpness).