Just wanted to share for the 10 people like me who has with an Nvidia + dual screen setup on ArchLinux (btw) with KDE Plasma desktop that since the new plasma 6 update I can finally use the Wayland session option!
The wayland should work has been around for the last 5 years and 5 years ago it was not even close, then 1 or 2 years ago it started not crashing but multi-screen was not OK (I tried all the kernel and driver parameters).
Now for me and my 5+ years-old setup (probably a lot of legacy plasma settings in my .config) it was finally seamless.
From previous tries I already knew that the desktop feels WAY smoother (true 60 fps everywhere, specially for the video players in web browser).
Feels great so far, discord screen-sharing is not there but can be done from Firefox if needed so OK for me.
I hope this post will be informative for some like me who tried several time over the years and didn’t had much hope.
PS : the cursor has a weirdly strong outline (too shiny to my taste) feels like unintended but not a big problem. I spent 30 mins in the options but couldn’t find anything about that.
I got to try out wayland with an nvidia card(cause it get set as the default with the KDE 6 update) and it was just horrible buggy feeling mess. Steam and websites would have parts of the page just blink out of existence, games would stutter. plus other random stuff going wrong.
I tried it with gnome recently and had the same behavior on steam and my browser, ended up rolling back to x11. I can tell I had less issues than the last time I tried it a year ago though :)