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Microsoft accidentally leaks internal tool that can enable hidden Windows 11 features
(www.windowscentral.com)
This is a most excellent place for technology news and articles.
There are definitely "quirks", even with a lot of the gold/platinum rated games on protondb. E.g. Titanfall 2, horrible crackling audio issues at times, even though it runs great otherwise. Firewatch, random choppy slowdowns, but rare. BattleBit, sometimes (not too often) 20 seconds of 20fps, then back to normal.