I rave about GSC all over the place and until I drove the Lotus 125 on Assetto Corsa which is just sublime, I knew their was something missing from GSC Extreme and I couldn't place it. Well, I finally came to the conclusion that it was the weight of the wheel of my G27. I'm not sure if this is the same for everyone, but the wheel on GSC just seemed a little too smooth and easy. I think IMHO it is perfect now and everyone else might want to give this a try. Try increasing the FFB steer friction coefficient from ="0.17500 to "0.37500" // Coefficient to use for steering friction. Range: -1.0 to 1.0. The command is located in your GSC2013/userdata/"user"/controller(.ini). To me it has increased the weight of the wheel to be more consistent with the real weight and performance of each car.