In last raceroom version the UI tell me that I have to replace only two front tyres during mandatory pit stop but AI pitstop lasts 5-6 seconds more than player. Do I have also to refuel? How can I set a mandatory pit stop equal between player and AI?
You could also define a minimum pit stop time in the race settings. Note that this is not the time that you're actually stopping, but the time you spend between the start and the end of the pitlane instead.