Addendum: I upgraded to Monterey (clean install). Same issue in Cubase 11. In Logic Pro X it works fine

thanks for the quick response. I am remembering a similar issue with sonbile and cubase. They had a switch to disable gpu acceleration and this way it was possible to use it. Maybe it has to do with rendingering.

Any news on this? I took the upgrade offer for cos pro a few days ago and also experience the lagging which makes it unusuable in Cubase, it even slows down Cubase when the gui is open, i get beach balls all over. Examples: If I click on the preset browser I get a beach ball and the menu will eventually show up ater a few seconds. If I try to navigate it continues doing that. My system info is: Mojave 10.14.6 Cubase 11.0.41 I have Ableton 10 live sitting around and thought i try it here to compare and there I do not experience any lagging.