If anyone is having trouble running the ball, I think I may have found some simple demo slider edits for now. NOTE: You CAN change the CPU sliders without the difficulty changing. If you change the user sliders, the difficulty will default to Rookie. Game speed at Slow, Threshold at 30. Also I had auto sprint ON, don't know if that helped but I found myself instinctively pressing the trigger anyway.
All I did so far was change The Pass Defense Reaction Time slider to 39 (Tinkered with it between 35 and 45) And changed Block Shedding under Rush defense to 46. Didn't change Rush Defense reaction time because it seemed like the D-Lineman would shed blocks when it was too late, and watching the Seahawks/Chargers game, D-Lineman DO shed blocks quickly from time to time, so I may move the Reaction Time UP a little.
Forte finished with 16 carries for 77 yards and a TD (Game went into OT)
However, I would consider the team you're up against. GB has some exotic blitz packages and they look just as they do on TV. They'll put guys up on that line every play almost and you won't know who's blitzing, so you really have to pay attention and throw quick routes to back em off. After a couple of quick slants and outs (Some unsuccessful, no cheese here

) They started to come out in more traditional 3-3-5 sets rather than the 2-4-5 they run a lot. They still will blitz like crazy but you have to read the defense and know when to run and where. And if all else fails, run AWAY from Clay Matthews!