Hi doc,
Can you check something for me please.
Right click the 'Shift.exe' select Properties.
Check the file version is 1.02
Sometimes the update doesn't fully install first time. If it states anything other than 1.02 you'll have to re-install the update.
If you've Vsync on, the 'My Cars' section may be limited to 30fps, probably in line with the console versions. I get +100fps in the My Cars section with vsync off.
I'm running a 4870x2, Cat 10.1 in Win7 64bit btw
Pre patch there was no mouse support in the menus, suggesting to me the menus are identical to the console versions & I did experience lag when switching cars in the menu's, post patch no problems at all, bringing me back to my suggestion of checking the file version of the exe.