I'm having a very similar experience here. I finally got a Windows box, hooked it up to my TV, and assumed that everything would just work since I'm on Windows

I'm having a very similar experience here. I finally got a Windows box, hooked it up to my TV, and assumed that everything would just work since I'm on Windows for once. In fact, lots of games will crash on launch, or glitch the display so bad they're unplayable, or ignore my Windows Night Light settings, or not offer the controller support which was promised. Ironically, the games which work best are the ones that worked on Mac/Linux anyway. Presumably, those are the ones where the devs actually put in the work to ensure broad compatibility. I think there is an opening for SteamOS to create console-type compatibility guarantees for a machine which also doubles as a general-purpose PC. Honestly if Valve doesn't get their act together somehow, I might just switch to a traditional console. I love Steam's Big Picture Mode, but if half my games don't even work, what's the point? (And don't get me started on how they killed the Steam Controller...)