Are you using the new 550 drivers? They are supposed to include lots of wayland related fixes. I might try it myself once they update it on the arch repo. Last time I tried, my 2060 and 525 drivers just did not go with wayland, at all.

I need nightlight mode so x11 until then

Same situation, but my machine just suddenly rebooted for no apparent reason 10 minutes ago. I hope Plasma 6 irons out these instabilities.

On a microsoft surface, just switched back to X11 from Wayland. Multiple applications segfaulting that run fine under X11. Mode switching in kde is miserable under Wayland with it being completely random as to how the resizing is applied if it doesn't just crash the DE.. Works perfectly under X11. Weird power state switching under Wayland causing background tasks to fail. Again works fine under X11.

I try Wayland from time to time, but my 4k60Hz TV (HDMI) keeps having problems.

Under Wayland I only get 30Hz and sometimes it makes the system very laggy.

Games are not happy on XWayland when there's a gsync only monitor at play.

I can recommend a hybrid setup. That works well with Wayland as long as you set that one kernel parameter. Otherwise the two GPUs won't be in sync and you get glitches when using the dedicated one.

Wasn't that the guy from Stone Temple Pilots?