first you need to install GID plugin for automobilista, that is available here in the RD. Then just drag and drop this files to the main folder of the game. Inside the car to personalized this plugin hit right ALT+space
I do not know what the problem will be but with the GID on screen they reduce the FPS in large amount, and I have a good PC gamer armed, I uninstall them and I got the FPS in full (60).