Allright, so i've had exacly the same bugs as you, couldn't steer a car or anything, and now i've spent over 50 millions in the game, and still got 20 left, and playing on international level with 1000000 global points, and got all the licens.
The solution is simple, lower you graphics, i play on lowest graphics, and if i change the graphics my car is going crazy, also remember the Shortcut for Flashbacks (enter - Default key)
I hope this helpt you.
Credits goes to CodeMasters for making a solution for that.
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