Assetto Corsa steering angle doesnt work

[NejtanDzi]

Hello, I got a PC 2 days ago and I'm trying to set my sim up for Assetto Corsa. It worked fine this morning but when I got home today, I couldnt synchronise the steering input with what I get in the game. e.g. I turn the wheel 90 degrees and the game detects 120.
I've tried playing with the rotation settings but still nothing. Please help!!
Thrustmaster TX with ferrari wheel add-on rim