I will try it, if u want ai cars to increase performance on lap, just renew ai line by simply making clean lap by yourself with ai editor on. You have to make good lines, with a smooth type of guide, es.cutting on kerbs where ai original line don't. You don't have to make record laps, just more aggressive lines. I make new ai lines for some track and increase lap time for ai car even by 3 seconds eg. detroit belle island...sorry for my bad eng.