Sent a long message before that didnt post.
For PI Penalties, set them to 100% and manually take over your WR's. Be careful with this because you can draw Offensive PI just as easy. This will not always work, but it is the only way I have seen to get these penalties called.
For Fumbles, Use LB's and Safties with good Hit Power and Tackling abilities as well as use the (Strip and Big Hit buttons) Using the features in combination with the good players will help cause fumbles without using the strip feature and risking several facemasking penalties. Keep in mind that if you are playing against or with a Fresh/Soph RB or with a poorly rated FB, you are more likely to see fumbles.
For Sacks,
- Recruit great (not good) DT's and DE's. Try recruiting ATH projected as DE's as they often have much more speed of the edge which helps.
- Recruit CB's and Safties based on your style of play. If you play a lot of zone, recruit CB's who are good in zone opposed to man or vice versa. If you play man, look for CB's who have a good Press ability as they jam WR's at the line causing the QB to hold the ball well. If you recruit CB's with poor or average Press be weary of playing Press coverage.
- Do not use any of the Down Linemen when playing. Stud DL play much better as CPU players than as User players. Good DT's will stay in the passing lanes, eat up 2 blockers and tip a lot of passes which causes the CPU to hold onto the ball longer, thus more sacks.
- Do not blitz up the middle. To much traffic, it is hard for your players to get through.
- Use the Jump Snap feature for your DL. Set this to aggressive. Good DL avoid most encroachment penalties and this helps get a head start.
- Blitz from the outside with FS/SS/CB/AND FAST OLB's.
- Do not blitz every play as the CPU AI will factor this and adjust routes accordinly getting the ball out quicker.
- Use at least 4 DL defenses. Everyone loves the 3-3-5, quarters, and 3 DL Dime sets, but obviously, the more DB's on the field the less chances for sacks.
- Anticipate the snap count particularly when at home and with the opposition in the Shotgun formation. Often the QB will lift his leg to signal for the ball allowing you to anticipate off the edge. Be careful with this because the AI will catch up and the QB will start lifting leg to put personnel in motion causing you to jump OS.
I average about 40-50 sacks per year in an online dynasty (Trust me, I lose on this dynasty to the CPU time to time, this is not a dynasty set for 50 - 0 blowouts with unrealistic stats) on Heisman level with very difficult sliders set in favor of the CPU. I get approximately 20 - 25 of these with DB's coming off the edge. The rest the CPU gets themselves by way of me having good DB's and Stud DL.
Good luck. Hope this helps.