i have a rtx3080ti and am using KDE plasma 5 wayland on Fedora 38(now 39) exclusively for gaming. i made the switch to wayland a month or so ago and i am having a considerably smoother experience than x11. especially with multiple monitors and flatpack apps like discord in the mix.(steam is running native though). no issues that i am aware of so far
i am using nvidia and wayland on kde and I am experiencing no problems except those I also had in xorg(ui elements sometimes become unresponsive after playing a game)