Games I've played on my Arch Linux desktop with a 4090 in the past few months: Clair Obscur, Disco Elysium, Outer Worlds, Red Dead Redemption 2, Cyberpunk, Dispatch, Silent Hill f, FFVII Rebirth. I haven't had a single issue with any of these games. What games do you think will struggle? I can give them a shot if I own then and let you know how they do.