Steering Linearity

I'm using a Logitech G27 wheel and had the steering ratio set to 1:1 with 900 degree rotation. Since the last update a few days ago, this feature seems to have disappeared and I am no longer able to have the game steer at the same rate as the wheel. The in-game steering wheel turns faster than mine and I'm having trouble with constant oversteer. Is anybody else having this issue? Am I missing a setting somewhere?

If that setting feature was in fact removed, please bring it back. Thanks.

 

The controller configuration menu has changed and the only slider available for sensitivity affects the rate at which steering near the center rotates vs near the far left/right. I see no option to make it 1:1 anymore.

 

Press these buttons on your G27 simultaneously (the two middle red buttons at the bottom and the lowest black button at the top):

This is a shortcut for 900 degree rotation.

 

Thanks for your help and suggestions, guys.

Unfortunately the simultaneous buttons did nothing different except what they were bound to in the game. My G27 wheel already allows the full 900 degree spin, but the game won't match it.

I have the sensitivity set to 1, but the wheel in game is still turning much faster than my wheel. I haven't changed any controller device settings (other games still work fine at 1:1). I'm stumped.
At 45 degrees left turn, the games shows close to 90. At 90 degrees left, it shows about 200. At 180 left, it shows almost a full rotation at about 350 or so.

Is there any other setting I'm missing? I've googled this issue and have only found older threads pointing to a menu option from previous versions of the game. It was a checkbox to set linearity. In fact, I remember setting that when I first bought the game, but I can't find that feature anymore.

 

As has been said, there's no checkbox for linearity as that's what the sensitivity slider is