Hm
If your using Dual or Quad Core, use Ax icon, if you don't and still wanna have better fps, you will losse quality in return of speed... Set your grafic card to Performance Mode, or even overclock it using RivaTuner... You could also overclock your pc, on bios.
On game, low as mutch at you can play the settings... and more, don't use regualar chat, it eats you a lot of fraps... if when you join to server you press F7, that 2nd chat will keep you focus on racing, and don't eat you as mutch fps as the outher one did...
I go to sleep now Bye