Hmmm... which Cuisinart do you have? I just shredded up 6 BIG heads of cabbage (probably 60# worth) today in maybe a half hour. While I admit the safety features are a bit of a PITA, and the feeder chute could be bigger, I just make sure I cut the cabbage in pieces which will fit, and leave the food processor turned to "on". The minute I put the pusher part in far enough, the safety switch disengages, the processor starts running, and it shreds everything in the feeder chute in about 3 seconds. I then pull the pusher back out, rather than turning the processor off by hand, and repeat.
I can see that if you turned it on and off manually every time, trying to be sure you had the pusher in far enough to disengage the safety switch, it would be a PITA.
If I could find a way to sharpen the OLD (circa 1960, probably) tin shredder attachment for my Kitchenaid Mixer, I'd still be using it for major shredding jobs. You could do a TON of stuff through that in one heck of a hurry (of course, you also had bits of cabbage or carrots or whatever spattered around in about a 10 foot arc, unless you managed to hold the bowl the shreds were falling into VERY close (and then the mixer part that goes around when you've got a beater on would clip the bowl and knock it out of your hand! LOL!), but it sure was a workhorse.
Summerthyme