The AI no longer takes turns from impossible angles, which previously resulted in them driving over curbs that were way too high and causing them to crash.
So I found out that the Adelaide2021 track is the same as the Adelaide2011 track, but with the annoying bug that the ai won't leave the pit lane. So I slightly adjusted the ai line for better use on the Adelaide2011 track and changed the folder name in the zip to Adelaide2011. If you still want to use it for Adelaide2021 you can do that of course but be aware that I changed the folder names.
I think the ai also drives smoother overall on the Adelaide2011 track but see for yourself: