Apart from the traditional issues with nVidia Drivers on RC versions of Windows being buggy as heck, yes.
Steam runs fine, and not had any 2D or 3D games I've tried fail yet.
If you do have any metro games, some of them are upset at the moment, as they can't handle resizable windows, and glitch out (Hello, Sonic Dash) - Sure they'll get fixed soon after RTM.
Biting the hand that feeds IT
