If you are on Windows, you could try my suggestion here and see if that makes a difference for you regarding the crashes, as the Visual C++ Redistributables seem to have some influence on the performance of the graphics ecosystem in Cubase.
If you are on Windows, you could try my suggestion here and see if that makes a difference for you regarding the crashes, as the Visual C++ Redistributables seem to have some influence on the performance of the graphics ecosystem in Cubase.