On "AA" what running back ability setting is unrelastically slow?

[Mizzoutiger]

I have been tryign to lower HUMAN Runniing back ability to make the riunnign game harder on AA. However, when I set it at 20 or below it seems like the human runners slow down to a very unrealstic speed--i.e. they get caught from behind by cpu players with slower speed ratings.

Have you found this to be true? Anybody have an idea as to how low you can go with the rating before it becoems unrealistic?

thanks much!

[Hurricain]

Up the CPU awareness on D. Up the tackling..not by too much or the fumbles will be out of hand. Lower human Run block are my suggestions.