Project Cars needs some lovve from the AMD driver team. As an Alpha tester for the game, I am having problems with the frame rate currently exhibited by my Sapphire 7950. I'm at less than 30 fps in dry weather and less than 15 fps in rain when those weather conditions are turned on in the game. The AA settings don't seem to work making the game look noticeable worse on AMD hardware. Also there seems to be an issue with AMD drivers supporting "Driver Command Lists" that allow the game to be more multithreaded. Running 13.2 Beta's from the AMD website.
Since the game is gearing up for a 2013 release, I believe that it would be in AMD's best interest to work with their development team more to ensure that the game runs just as well on the AMD hardware as the Nvidia hardware. I realize fully well that the game is in Alpha, but it's very hard to give the development team feedback when your best case testing scenario is 30 fps without AA. I'm running a FX-8120 so I really want my AMD hardware to shine in this game as it looks absolutely gorgeous.
Some footage from 6 months ago.
Newer in game fan video.