Its a beta, what did you expect?
A beta, with some big bugs, some huge stability problems and some very unstable alpha or beta drivers, so far I am actually impressed by the over all quality of the Beta, but the default drivers are just that, default and bad.
Dunno if that will help, prolly not but thats what nVidia has to say on drivers.
Ah, so all the Beta drivers are available through windows update, neat. I just assumed nVidia would release their drivers separately like they normally do, but that's cool, everything in one place... perhaps this time around the Windows Update Utility will be useful.
Thank you for finding that link timaahhh, that was exactly what I was looking for.