The AI line is very fast and well done.
But after every race start in lap 1 the AI cars still crash after turn 2 on the long straight. I've tested with GT3 cars and Tatuus F4 car. (100% AI strength, 50% AI aggression, 100% car damage)
But there's a solution for the problem. Use danger hints for the whole track in the ai_hints.ai to tell the AI cars, that they're racing on a track with concrete walls and barriers. I'll post my version of the ai_hints.ini at the support forum.