It seems that no one here has the problem, which is still weird, but there might be a solution to this problem:
I’ve been in contact with a plugin developer and he provided me with a version of his plugin (one of those that caused the hang) compiled with VSTGUI 4.3 instead of 4.0, and with that version I never had the hang state so far.
The culprit is probably vstgui/lib/platform/win32/win32support.cpp, there is a commit that looks suspiciously related to the problem:
This seems to be related to DirectX, but a some questions remain:
- Why do so few users encounter the problem on Win10?
- Why is it only Cubase that has the problem but not Studio One or Reaper (which I tested here on my machine to see whether they show the same behavior)
- Was there a change in Direct-X from Win7 to Win10. I never had the problem on Win7 which I used until February (on my old machine)