You need to enable safe texture cache for the game to not crash randomly. You won't get good speed in that game though. Try changing the EFB settings in graphics configuration.
Specs: intel i5 3570k @ 3.4GHz;
16Gb RAM; Raedon HD 7900;
Win8 64-Bit
16Gb RAM; Raedon HD 7900;
Win8 64-Bit