I’m not sure why this year+ old thread has been necro-ed, given that the post that brought it back to life didn’t ask any new questions.

However, if you’re interested in an update, then I have Windows 11 on my gaming laptop, and I did have problems with Solasta, Pathfinder: Kingmaker and BG3 (the latter in DX11 mode only), all of which dropped to ridiculously low frame rates. I tracked this down to the Windows 11 Game DVR setting, which as I don’t care about game recording I could just turn off and that solved the issues. There has been a Windows update since that may have fixed the underlying problem, but I’ve not got round to turning the setting back on and seeing whether it’s now okay.

I haven’t had any problems with other games, including older ones, though haven’t played a huge variety of games in the past couple of years.

"You may call it 'nonsense' if you like, but I've heard nonsense, compared with which that would be as sensible as a dictionary!"