I don't think there's a quick solution right now (even 2 or 4 Gb GPU will not fix this baby) and nothing will really help unless they fix the game code. I have a very fast system and lot's of ram and a fast gpu and still it stutters. I cannot imagine my system will not be enough to run this game (come on, an i7-2600 and 8 Gb ddr3-1600..).
The game engine seems to be the root cause and we can only wait. It has potential, but in its current state it's very bad....
Rgs,
FP
edit: added 'not'...
