Diego,
Wanted to let you know that this driver seems to be working much better. I do not have any VC-1 encodings so I can't attest to that, but I do feel like I can see the slightest occasional stutter. I can live with it the way it is; but I guess you still have a little more work to do for the VC-1 folks or for those that can't stand the slight stutter every once in a while. Although, I haven't seen anyone else mention the slight occasional stutter....yet.