I still haven't figured out what user tacking does if anything.
I did see a good bump in quality rushes when I moved the CPU run block from 50 to 59. The cpu running back was definitely more aggressive but I've also seen an increase in fumbles. Nothing game breaking but more than before.
What is important is QB accuracy as its directly tied to CPU play calling.
I have my CPU accuracy set at 42 and I'm still debating what to do with it. Seems like if I go any lower the CPU rushes the ball too frequently but any higher and the passing accuracy is through the roof.
This whole thing is really messed up.
I will add that dropping Intentional grounding has prompted the CPU QB to release the ball much quicker under pressure. Still too many sacks but at least the QB seemed to work the pass a mix of short, medium and deep.