Another trick you can do is type ctrl+alt+delete, then click on the processes tab, find aerofly, and right click it, and a menu should come up letting you set the priority of how much CPU power is directed for it. If you increase the priority, you get a marked increase in performance, but as with all overclocking you have to be careful not to melt your components.

Luke, thanks for the great piece of info. Seems like there're a few choices from "above normal" to "realtime"

you must update your afp to 1.6.8 version