Rhino causes entire OS to slow down

Sorry for the vertical recording. I think V-Ray night be causing this. Nothing is rendering, but I think the UI slows down after completing a render. Rhino on my Mac doesn’t have this issue, and the GPU is nowhere near as good. I use Rhino at my job and that PC doesn’t have this issue either. I did try swapping GPUs in this PC and the same issue occurs.

Hello - the test would be to open Options > Plug-Ins and uncheck the ‘Enabled’ check box for the VRay plug-in(s) and then restart Rhino - any different?