Not counting the Steam Deck, since KDE isn’t actually turned on while you’re running games.
Normally I’m a Gnome guy, but I’m building a tiny low power portable computer and wanting to keep resource utilization low, so I’m investigating other options.
Gnome Wayland mainly.
I’ve been flirting with Hyprland wick seems really nice. I’d fully switch to it if gaming performance was on par with what I get on Gnome.