I kinda had the opposite experience, switching from gnome to plasma for the more experimental features it supports on Wayland.

So far, plasma needs like a literal minute after logging in before any app can open.

That came with other weird issues, like alt-tabbing with a Fullscreen game being very finicky, sometimes refusing to alt-tab, and sometimes the taskbar breaks and stays frozen for most of the time, only unfreezing for a few seconds every minute or so.

I would sum up my experience as GNOME being more polished, working more consistently, while Plasma is perhaps better designed, more full-featured, including cases where GNOME is waiting on something to be implemented/standardized.