I think they released the Game in Alpha version because they need more Budged to reproduce EVERYTHING for the Xbox360 and PS3 version..
i really hope they manage and fix this Big bunge of Bug..
All objects are totally crap and the movement of Water , Animals and NPC is slipping and stuttering!
And @I Dont Need anything Guys its 2009 and not 1999
Someone will pay 50$ for those crap dont forget it !

BTW AA is enabled when you set the AA ingame in options without restarting