Nuendo shows beachball on simple tasks

That’s not what I wanted to say. :blush: But it is a commonality. Of course it could be something else. I can only tell you that I use Windows and don’t have this problem, and if your problem affected every other Mac user, the forum would probably be full of cries for help. :wink:

But my general impression is that the problem is more likely to occur on a Mac:

For some, an update from Cubendo fixed the problem. (This affected version 11.) For some, updating the Mac operating system helped. For others, the problem was with the graphics card (driver). You might want to read the thread linked at the top. You may find something there to help you figure out what might be going on.