Silly question, but have you and Thomas (and other testers) compared nVidia driver versions on your rigs? In the past there have been weird resolution issues that sort themselves out (or show up) across driver versions.
Probably a small factor, but might be worth checking out if you haven’t.
@VoodooDE@SweViver in Berlin didn’t people say the actual game setting resolution affected clarity of image, at least in IL2?
Have you tried messing with in game resolution or in game super sampling if available?
Certainly something funky going on somewhere if image quality is lessened at higher res.
This is the same thing with telescopes eyepieces, there are numbers on paper and those for your own eyes.
Not everyone is telling you the same thing about eye pieces, its very personal…and even more than that, youngers can see things differently that olders because of the eye aperture size for example.
Both of you make sure you have Nvidia control panel settings set to “Maximum performance” rather than the DEFAULT that is assigned again every few driver updates, “Optimal Power”.
Nvidia control panel > 3D Settings > Manage 3D Settings > Program settings > Select SteamVR or Pimax runtime > Power Management Mode “Prefer Maximum Performance”