I slow it way down when I get into the ten big blind range and the antes are in effect or affect(I like to slow it down in this situation because you play less hands so you pay out less in antes and the small stacks on the other tables are likely to bust out of the tournament so give more time to do so.)
If there's no antes and I'm in the ten big blind range then I want to play as fast as possible so that I can see a bunch hands to get a really good hand/position to shove all in with.
If I have a decent size stack then I usually try to steal blinds by playing a little more aggressively.