I've been buying some cars and driving the nordschleife to try to find what's different with the ai. Imho they drive exactly like they have always been.
Still extremely slow in T1. Still waving left and right on the straight after fluhplatz. Silly slow in aremberg, you can pass 4 cars easily on the outside. Still brake checking and going slowly on that next straight. Braking really early and going slow through adenauer forst and brake checking on the corner exit out of adenauer section. And so forth. The ai still hits you exactly the same way in the exactly same places. Like when going into kallenhard hairpin. There literally is no change. I think the claim of ai change is bs. Or has to do something with the coding and efficiency or something that isn't possible to see from driving perspective.
I've seen no evidence of it. I've done hundreds of laps around nordy racing the ai cars in arcade and single races and I am totally unable to find even one single difference. In fact the ai drives so similarly every lap that any kind of change would be easy to spot.
Map of nordy for reference:
http://4.bp.blogspot.com/_ok92 ... 00/nordschleife_gross.jpg
And looks like we have a new seasonal:
http://www.gtplanet.net/new-ho ... on-seasonal-event-in-gt5/