Forza Horizon 3 doesn't recognizes my Thrustmaster Wheel

Dear Forza Support,
I wants to play Forza Horizon 3 with my Wheel (Thrustmaster TMX pro). The problem is that the game doesn’t recognizes my wheel very well. The force feedback feels completly creepy (can’t explain that, better), there is no over/understeer simulated. The clutch and my TH8A Shifter doesn’t work at all. But in the settings, the game knews which wheel connected is. Forza Horizon 3 is up to date. My Windows PC got the newest Version and the drivers for the wheel and the shifter are also installed. By the way Forza Motorsport 6 apex also doesn’t work, but every diffrent game like DiRT Rally or Assetto Corsa working fine. Sorry for my bad english skills, I’m from german. I hope you can help me.

best regards