Since swapping from fanatec CSL to the Clubsport V2.5 I have in game setting ffb 25 to 40 car dependant. All other in game at zero or off, fanatec does not need added ffb to pick up Kerb, slip or road.
On the wheel Sen set to auto, dri from 0 to -3 car dependent.
Adjust in game for Assetto, not on the wheel rim, leave wheel ffb at auto and start in game around the 20 to 45 range. It is easy to adjust from the pause menu at anytime.