50 lap race, Monza, Mandatory pitstop, minimal 2 tyres. Made pitstop in lap 27 under SC. Changed all 4 tyres, getting DQ starting lap 50 of 50 with half the AI field also getting DQ in turn one of lap 50. All DQed AI made a pitstop for tyres. This happened many times in other races too, half or more of AI get DQ for missing mandatory pitstop while the actually done the stop. Please fix this. It happens both with Reiza AI files as with custom AI files