Originally Posted by: Zicious 
I just wanted to chime in saying I too have a G920 and it literally is unplayable right now in Forza Horizon 4. I have scoured the forums trying every setting and fix.
I switched back to Forza Horizon 3 for testing and experience none of these same issues.
The most important setting that 'helps' is the steering axis deadzone outside. I have to set that to 20 just to even get the wheel to be manageable on high B class cars. Once I move to A class I simply cannot avoid uncontrollable spin outs from steering.
Changing the deadzone outside in FH3 causes the wheel to be so sensative you can't move it a hair without turning versus FH4 where it makes steering more manageable? What the heck.
I did the same race a dozen times switching between my wheel and the game pad on my Xbox One X in FH4. The faster the car the worse the problem is.
Can others chime in with what wheel, device, and USB port they are using to play with? I see some saying they have no problems or it's fine while some of us are experiencing this.
Here is my setup:
G920 Wheel with Stock Pedals
Xbox One X
Hooked up using Front USB port
Playing at 4K with gaming mode on TV.
I am using a G920 plugged into a rear USB port on an original XBox One. I have tried so many different settings since early access that I have given up for the time being and will enjoy the game with the gamepad until a patch addresses the wheel issues.
It is the same problem others seem to have: losing control in corners despite proper counter-steering. I went back into both Forza 7 and Forza Horizon 3 and can counter-steer just fine as usual.
I am also curious about those who say they are not having these issues. Maybe those people have not tried racing any MR cars yet? The issue is less apparent with AWD cars.
In any case, there are clearly dead-zone issues, at the very least, since no-one should ever need to set the outside dead-zone to 20.