NVIDIA GameWorks Integration

Hi.

I tried your GameJam game and it works for me. About 10fps on my gtx660ti, not much (almost not at all) difference in speed between vxgi quality settings.

Now about turbulence. First of all, thanks for you time and work on it. It works but i have the same problem i had with turbulence-4.7.6 branch. I tried to solve it . /issues/34

Any ideas what can be wrong?