It is great. I have been using Linux for about three years and majority of that was with KDE Plasma and its Wayland session. Most of that time was with Arch and Fedora and it was all smooth sailing.
It was faster and smoother than GNOME Shell, Cinnamon or any other desktop I have tried.
It may have slightly more bugs compared to GNOME Shell due to sheer amount of features it has.
As others have mentioned, you might have a hardware issue that coincidentally pops up with Plasma.
Great.
I thought NVK was going to support only Turing and onwards, since it relied on GSP firmware.