as an absolute last resort you might give software opengl rendering via mesa for windows a try: Mesa3D For Windows - Federico Dossena … if you have a very fast machine it might even be useable, otherwise you’ll either have extremely slow working graphics and not really useable sound and useable sound maybe whenever you iconify vcvrack 
… i tested it once on a old intel laptop and it was at least ok to check some things
good luck and best wishes - hexdump