Hello, graphics become unstable after a short period using Cubase. This is independent of preferences and/or VST bypassing, and happens with any/all files including new. I did not experience this with 10.5.20.
I have posted a screen recording of this behaviour: Cubase Pro 10.5.30 Instability - YouTube
Everything is up to date as of this writing:
Video drivers: Nvidia 466.27
Microsoft Windows 10 (10.0) Professional 64-bit (Build 19042)