FYI I’ve been running Steam and Wine games in Gamescope because I’m using a window manager that doesn’t implement XWayland. I don’t know if that would help with Nvidia, but might be worth a try. It works ok; Gamescope has a Steam integration switch that helps.

I think Electron apps mostly switch to native Wayland mode if you set an environment variable, ELECTRON_OZONE_PLATFORM_HINT=wayland. The one I don’t have working in Wayland mode is Discord. See https://wiki.archlinux.org/title/wayland#Electron