I’m using Max 2015 and Vray 3.30.03 I’ve always seemed to have problems with CUDA mode either not starting or being really slow. On the other hand, when I tried Corona and Red Shift, it was really quick. Can you tell me what settings you’re using for RT?
I already sent Vlado the scene. What type of work are you doing? VRED is great for automotive and product visualisation, but that’s about it.