Yeah, KDE was also my first DE but immediately switched to Gnome for 3 Years. Till now after having an AMD card. I guess a lot has changed, i also got way too much issues years back then with Nvidia.
I also saw a difference shortly before switching to AMD with animations on KDE (Gnome went nice with Nvidia). They were either loading, caching or just lagging or smth when hitting the Overview feature (Similar to Gnome super button). This small uncomfy issue instantly went away with AMD for unknown reason.