Thanks for the tip, it might be worth a shot too.
It seems the particular problem I have is very much related to the combination of Cubase and the x64 versions of 112db’s VST’s. In my other x64 host (Machine) the VST’s work as expected. This is also what the developer experienced with other hosts.
The only moment they could reproduce crashes on the system running Cubase, was by overloading it (which obvious could lead to crashes).
If the info stays limited here it’s indeed hard to feed it back to support or pinpoint my own systems failure if that’s the case.