Sunspark don't wear glasses. Having said that, how would I go about testing your theory?
If I look at a full screen youtube video of Witcher gameplay - and that creates eye strain - but the actual game does not - that would mean your theory is wrong. But if a full screen youtube video is as eye strain free as the game - that would prove your theory?
Before I go and experiment with this, can I use any random youtube video of witcher gameplay? Or is it best that I capture my own, eye strain free gameplay, upload it on youtube, and then do the experiment?
P.S. I have tried this with a screen shot already (see balthazar ) and the result was: painful to look at in Windows, painless to look at in game.
P.P.S. @Sunspark in your case, did getting the right kind of glasses fix all brain fog/ eye strain problems for you? Can you use any screen now w/o problems?