May i jump in and offer you another solution for your AI races : you can tweak create AI cars using
Assetto car tuner
This way you keep your real driving style and pace, but you decide how fast the AI can go.
On a basic setting, i just manually edit the power.lut, adding 8 to 12% in the mid-range, and only 3-4% to high RPMs.
You can then edit a few tyre features such as overheating ratio and other stuffs, you can also edit the drivetrain to give your opponent a more efficient gear ratio, and then edit the ai.ini a bit to make them more aggresively driving.
Also, editing the setup.ini allows you to let the AI use full turbo settings or go above damage RPM, bringing some nice motor explosions offline when the AI goes too hard. I love the randomness of it.
It's a funny way to improve your driving offline, and if you're driving clean some slight battles actually happen.
Let me know if you want me to edit one or 2 cars of this to give you an example.