Greetings! There is a specific script, with each section of the parameter for each AI (Policeman or regular pedestrian, car driver, bandit, etc.). This means you may have installed a mod or script that conflicts with this script. This can be for example: you installed 2 mods that call the same parameter and therefore the script may not respond, it is strange that the game does not crash. Try to install a second copy of the game and put all your mods (Addons, textures) there. Check the scripts carefully. The problem is not in dinput8.dll for sure, because this is a parameter for the performance of the game. TO THE SPECIALISTS WHO UNDERSTAND: I just made an assumption, I advised the most ACCURATE option. It can take a lot of time for this, but believe me, as I tested 300 Addon Cars for my game. Thanks and good luck!