This was a new template I was designing for the past few weeks. It’s big and bulky, but loaded without problem at least 100 times without issue, it would always take some time to load, but it would never get hung up.
First time loading it since 10.0.3, and it seems stuck. Nothing has changed except updating Melodyne to 4.2.2 and Cubase 10.0.3.
I will, force quit Cubase, reboot, and see if the problem is still there.
edit
seems to work fine now, although maybe a bit slower.