I first noticed this problem in year 2 of my dynasty, I was smu vs tulane (i think) any way it was a high tempo no huddle team. It was late in the third quarter, they were on a long drive, they got to around 30 yard line. I could my see guys getting tired, they were all yellow orange, or red. Then on the next play, i called my play and i noticed something weird, i player locked as SS and i noticed my SS that was subbed in was #2, which was odd, so i thought for a second,
and realized it was my friggen starting quarterback! I also noticed the 2 or 3 of my wide receivers were at CB! After hit-sticking some fool with my QB at safety lol, i promptly called a timeout to see wth was going on. The problem was that my back up safeties were playing at #3 and #4 corner. This meant my depth chart had no-one to reach for once my Starting SS was tired, and instead of picking the next best player in line, it for some reason grabbed a QB, and WR to play DB's.
This kind of thing could very well be happening to the AI, and might we not even notice.