Have you plugged in the wheel before starting rF2? I didn't and had to wait for about a minute until anything appeared on screen. Even then all I got was white screen. Killed the app, plugged the wheel, started back again. This time all went well.
If you right click the game and go to properties, you can go to the launch options and delete that stuff.
@F1lover it's not a new error, but the fix will vary... Could try running steam as admin as Goanna did: https://forum.studio-397.com/index....or-2-1-1121-now-available.67094/#post-1038399