If you are faced with high cpu usage in the Assetto Corsa and you are using a Microsoft sidewinder force feedback wheel (usb) then this guide is going to help you fix this problem.
Just go to C:\Program Files (x86)\Steam\SteamApps\common\assettocorsa\system\cfg and find the file called assetto_corsa.ini
Open the file with text editor and find the following string :
And change it to:
Now your game should run smoothly.