hi there seem to have a stutter issue when running a race on the street tracks and all other tracks run fine. when on the street tracks at certain points the frame rate drops and i get stuttering.i get 60fps(with v-sync) all the time apart from the street tracks any help would be good.thanks system spec belowAMDx8 FX 8350 o.c'd 4.7ghz (water cooled) | motherboard ASUS Sabertooth 990fx | 16gb ddr3 1333mhz ram | 2x MSI 3GB hd7950 boost edition in Crossfire | Xfi soundcard | Windows 7 64bit | Logitech G27 all drivers upto date. Running @ 2560x1440.