No 99% is high, i just made a few suggestions of things I do to improve speed on some of my stuff.
Removing extraneous tests, removing doubling up on variables, moving to faster operators where necessary (and using the benchmark module to test).
Basic stuff, and i only looked at a routine or two for about 10 minutes. Nothing earth shattering.
So any speed increases you see, are all Mastermind's hard work!
--mark