Actually in this regard, at least, the current AI for AC is better, which is not something I thought I'd be saying...
It takes time but there are instructions on this site where someone has taken the time to explain. My level is about 95% so I do one lap with 1 AI from levels 93-98 so 6 laps on hungararing takes 15 mins and have my AI. Then race with adaptive and that's what they do, adapt.
Training (adaptive) has nothing to do with the issues plaguing the AI. Seems to be a common misconception that adaptive AI can alter AI behaviour when all it does is match AI pace to the player's using laptimes as a benchmark. Nothing more.
Well it's mostly practice sessions I've been doing, so that may partially explain it It's also entirely possible I'm running strange racing lines, I'm quite a noob, it's just that I have noticed that the current AI in AC seems to be more aware of my car and seems to hit me much less often. NB: it's only this aspect of the AI that I'm saying that AC seems to be better at currently than R3E.
Thanks for the tip. BTW I've just started reading The Perfect Corner: A Driver's Step-By-Step Guide to Finding Their Own Optimal Line Through the Physics of Racing: Volume 1 (The Science of Speed) by Paradigm Shift Driver Development This has already given me some insights, though turning theory into practice is harder than it looks...
BTW me neither, but then there's things like this (sorry about the green racing line): But Raceroom is much better for running proper series championships (and track environment, and atmosphere, and sounds, and... you get the idea).