when i have played 30-180 mins, lfs goes grazy. the game goes black and white,cant see anything on track, all texts are only fat lines, i can see only driver and tires of car, fps 0 and game crashes if i dont quit the game. this happens only in patch Y and X

Sounds most like a video card problem. Theres a chance it could be overheating so be sure that you have good air flow in your computer and update to the latest drivers from your video card manufacturers site. There are a few programs you can download to monitor your gfx temperature like Riva Tuner, PC Wizard, or Speedfan. Although they are capable of temperatures of around 130, they run most efficiently when below 80/90 under load.