In the player file I've set fixed setups to true and fixed AI setups to true. Then ingame I've set starting fuel to 10 liters as a test and then assigned it as default setup. I was under the impression that with these settings, the AI would use my setup and therefore have to pit after a few laps, but they don't. Any ideas how to get them to use my low fuel setup?
Question is.. is fuel settings really a part of the setup that is forced on the AI? I think it should be, but I don't know. Have you tried the fuel consumption multiplier instead? Try to set it so high that full tank is not enough for the whole race. If they still don't pit, and run out of fuel instead, then something is broken (would not surprise me)