I want to weigh in too. Freezing on iMac Pro. Cubase hangs frequently. Every time I open it, after a while it will freeze, and I have to force quit. ???
Do you have a crashlog for us when you force quit? That would help to figure out the reason.
OK, so after looking at the crash report I noticed a wacom driver kept appearing. I deleted that, and the darned thing has been up all afternoon. 