I've never been a fan of this adjustment in the past (I have not tested it this year and do not plan on doing so). It always seemed to amp-up the offense WAY too much for my taste (which is what I am trying to counter-act).
In general, the QB AI responds poorly when coverage is abnormally tight. (Frankly, we're on a very fine line with this setup). Simple solution, don't tighten the coverage too much, keep ballhawk off...and it will be fine.
With this setup, I see no need for it...if I wanted a little more oomph by the CPU QBs, I'd just set DPI and DH back to 50.