I had Nvidia driver version 375.95 - WHQL on my Win 7 system, and GPU accelleration for VWD didn't work. Now I've installed version 391.01 - WHQL (Feb 26, 2018), and WOW, incredible how a simple sheet of cloth drops like a brick over that test cube! Then it slides off the cube and wiggles and crawls around exploring the floor around it, like it is alive! Scary!

What a difference to how it was before, when it slowly, almost elegantly draped itself over that cube, calmly coming to rest in a relaxed pose.

What an improvement!

Cheers!

Erik