The problem is not the time its taking your defense to get off its blocks. The problem is the QB AI simply not throwing the ball away. You could set CPU Pass Block to 100 and you won't fix this issue.
EA's tuner update a few weeks back didn't fix the issue because it didn't address the real problem i.e. the QB AI.
If you look at the other slider sets here you'll see that there have been some valiant efforts to fix this by the OS Community, including roster editing.
But it seems that to fix this properly we can only hope that EA have seen the issue and can fix the AI in a patch.