Simucube 2 pro ffb problem kronos simracing car pack Assetto corsa Rally

Hello everyone

I just discovered the rally on assetto corsa and my god what a joy!
I just have a problem with my simucube 2 pro and the kronos simracing rally car pack.
The FFB of the cars is very strange, the base makes a kind of crackling sound, and the steering wheel is extremely hard when the car stops and returns to almost normal when the car moves forward, but still remains very hard during an impact, road defect or collision. The crackling is also very present when driving. I would like to point out that this only happens to me with this car pack only, I have never had a problem like this with my drift or racing cars in content manager.

Anyone have an idea of ​​the problem?
(sorry for my English, google translate, I’m baguette)

Thank you!