The hairpin at Hockenheim will probably be a difficult one to correct. I also see the AI outbraking themselves frequently with heavier fuel loads, but once the cars lose the weight later in the race they do become much more competitive. Maybe it needs just a hair adjustment?
Then, as previously mentioned, that issue at Shanghai in turn 5 where the AI refuses to go more than 1-wide through there....though that's probably not a braking zone issue but rather a "width of the AI's racing line" issue, for lack of a better term.
I agree with Riley about turn 10 at Monaco, though because I use a gamepad I use ABS so I'm sure I'm a bit biased...
I agree with turn 10 at Brazil, but again this may be because of me using ABS.
I wish there was a "50% abs" setting lol...