Keybord behaviour

I am using a Keyboard in Forza Horizon 4. But i noticed sometimes it works better, sometimes not.
When i am in the Cockpit view i can see the control wheel and when I steer, the steering wheel reacts different. Sometimes it reacts very smooth and I can control the car very good. But sometimes the Behaviuor switches and the Steering wheel reacts very rapidly. So if i press to the right, die Steering Wheel goes directly in the full right postion. Then the behaviour of the car is completly different and I am not able anymore to get good result in races because i have to slow down in curves a lot more, otherwise i get out of track,.
This switch to this behaviour is sometimes there when i start the game, somtimes i am able to play many hours without any problems and sometimes it switches after a few minutes during a Race.
What can I do, is there any setting for this or how can I fix it, that it doesnt change and the steering remains smooth?