Could you reveal some more Details, as like which version of PhysX you used, and how significant the improvements were?

I only have a GT440, but i'd like to give it a try, if i knew exactly what Version Number is needed. I loathe the fiddeling around with x diffrent lib versions while risking to smash the whole driver installation. This might evolve into a quicky-sticky workaround to fix this. As long as the devs stick to the same lib version, that is. But if they finally upgrade to a newer version, they might use a gpu-enabled one anyway.