I've tested your demo and although the fps is really impressive (70 on AMD3800+, ATI 1950Pro) the camera movement when the balls are in sight is _extremely_ jerky - the counter shows 70 fps but it feels more like 5.
I doubt very much that this is caused by the camera code - it would have to be extremely badly scripted (which is surely not case with George). The fact that some people are experiencing less fps but smoother camera movement on previous versions points out to the engine itself too.

Personaly, if I were to choose an engine for a game, I'd pick any that does 30 fps that feels like 30 fps over something like this. I mean - what's the point of having enormous fps when the gameplay is jerky? Isn't the smooth gameplay exactly why we want the fps to be as high as possible?

Hopefully this is just a bug....