I had several GUI problems with plug ins. I thought then they were Cubase 10 related. Turned out to be Visual Basics installed. I downloaded all the latest, both x96 and x64 versions from Microsoft, also the obscurer ones i could find, 2011, 12,13 etc. and DotNet (472?) De-installed all the ones from Windows, and reinstalled the lot, IN SEQUENTIAL ORDER by date. You could check your graphics drivers too. Some say when possible you should turn hardware acceleration OFF. Reinstall DotNET too.

On the Steinberg forum: Halion 3 crashes

You could check your DirectX too, DXDIAG, built into windows somewhere ...

PS i have still appearing audio stutters, but only when i am time-stretching and pitching in Cubase's audio editor. Can't find that one but IMO also Graphics related. Frigging windows, once it runs it's fine, but GRRR at times. -F