Alright here is a quick little race I did at DW Layouts AA and AF are to the max as far as i know and... iunno I don't see as big of a difference as I was expecting.
Two shots from todays relaxation runs.
In the first pic Hyperactive is trying to catch me, he was obviously faster because he had a co-driver so he knew where to go...
In the second pic Im having a fight with Micha. Oldschool MRT, it was a fun fight to win by 0.02 seconds
Looks like the big corner on South City to me. Not sure which configs run with that corner, but just look for the biggest corner (largest radius) in South City and that should be it.