BaseCamp und Big Sur

I installed macOS Big Sur, and all of my Apps I testen so long are working fine, exept BaseCamp. I am using the latest version supplied by Garmin. Yes, it starts somewaht slowly, but then it is nearly impossible to work with it. The reactions are very very slow, the wheel is spinning after each mouseclick.

If there is no update within sight, I will go back to Catalina