Honestly I’m jealous of you, I have a Nvidia GPU and both Xorg and Wayland run poorly on Plasma. Wayland corrected many things but brought others problems, and Plasma’s experience at Xorg is degranding.
I am jealous because I am already used to my workflow in Plasma, and besides, I love Plasma, but otherwise it would be a Gnome fan.
And it’s curious because I also have the problem of windows or mouse leaving a ghost shadow in certain windows. In programs like Yuzu or RPCS3 that makes playing simply impossible, I thought that was a problem at the level of Nvidia drivers, not DE, maybe try Gnome, thanks OP.