>>413009761
if you want something SteamOS-like or gaben-sanctioned go for arch or an arch-based distro like Endeavor if you can't into reading a wiki or using a TUI
SteamOS is just arch + gamescope + gamemode + mangohud + steam gamepadui + a kde session and a switcher between it and the "game mode" ui
SteamOS as it is is not good for desktop use because it would wipe all of your shit when you update if you add any extra packages by default, and would require workarounds to bypass this behavior
KDE is alright
x3d only slightly bottlenecks for 4090, its still really good