DIFFICULTY: - 95
STAGE - Seems to be random, didn't notice particular stages causing this.
CAREER - Longest settings, no assists, Finland was one stage I remember for sure.
TOD - Daytime
WEATHER - Clear, but I do notice when weather is bad the times start getting very very slow.
CLASS - Rally 1, Rally 2, and JWRC.
Thread I have supplied screenshots in: https://answers.ea.com/t5/Bug-Reports/Ai-times-don-t-add-up-in-career-mode/m-p/13190475/highlight/true#M1714
This particular rally all of the sudden all of the ai drivers cliffed min 3 mins behind me, most of the ai cars suffered no damage according to the roster.
It's happened several times before, I don't think I have ever really finished a championship considering I always run long versions without the ai times dropping off at random times, it's almost like some stages are not being recorded or added into the total championship time resulting in every single ai driver dropping off around 3 mins. Then a few stages later it can happen again resulting in one case of me winning the championship at skill level 95 by 20+ minutes. I personally think it's because ai stage times here and there are not being accounted for at all resulting in players winning by a huge margin.