Yes, at first it will start out slow but after practice it will become quicker and there will be patterns that you will notice which will make LGs easier and easier to the point that you will be making -4 or less on each section.
I'll never forget the proctor with bad clock and "I'm always right" attitude. Oh, and the 60 or so pissed off future law students who knew they wer short-changed. I didn't notice anyone else, I was in the mode.