After a full 50 minute race at Curitiba with the ai cars completing 37 laps with one pit stop, I noticed two things. In the garage set-up, setting the fuel for 37 or even 39 laps with one pit-stop, car will run out of gas. No problem, just add more fuel. But, without doing a two pit-stop race the tires wear much faster than the ai cars, to the point of losing 2-3 seconds per lap at the end of each stint. If I use a two pit-stop race, so I run on fresher tires, I end up finishing toward the end of the pack. Maybe this could be addressed in a future update?