If you are shutting the CPUs rushing down like that every game with with there runblocking on 100 you are a BEAST with your run defense.
I have a pretty stout Dline with stud LBs and I'm not shutting the CPUs run down like that every game with there runblocking at 85. Did you download the patch back in October when they fixed the CPUs rushing or did you get the game fresh with no updates? Everybody had the CPUs rushing maxed out like that because they couldn't run the ball. If you haven't updated game with the patch the CPU will continue to struggle running the ball.