I'm probably retiring my Windows security work when Windows 11 becomes fully ubiquitous, but last time I was running tests on Win 11, I found that the way Win 11 uses Virtual Machine Platform to isolate memory can mess with running some games.
It makes Roblox absolutely crap out, for example, which actually leads me to believe that it might be certain approaches to DRM causing at least some problems - not an issue with the stuff Giles works on, of course.