Blue flag from race start

On two player career mode I had a blue flag from the race start. As soon as the 5 red lights went out, I had blue flags. The ai started driving through me as ghosts and overtaking me by doing so. The whole timings and positions were glitched, with drivers on track not matching their order on the UI. The error lasted throughout the race, and despite finishing p3 on track, the race said I finished p6, 1 lap behind the race leader (Hulkenberg) even though I actually finished about 3 seconds behind the real winner (Norris). Upon moving to the race overview, it said that the race winner (Hulkenberg) won by a lap with a race time of 345 minutes.