I have Win7x64 on an Alienware 18x-R2, 32gb ram, and with a dual hosted graphics environment (GTX-680 and Intel 4000). When in the Nvidia mode, VMware ALWAYS crashes. I've tried drivers up to their current 620.40 WHQL release. When in Intel mode, I never see a crash, but the graphics performance is, of course, significantly reduced.
Sent dumps to VMware - no response.