[chickentree]

Two things come to mind.
The first is that almost every instruction has a duration which defaults to 1 second. You can change this to 0, which means as fast as possible.
The other thing involves using events. If there is a loop in the events code, get rid of it! The event will, assuming you are using the while the world is running event, automagically call itself whenever it can while the movie is running.

Without seeing the code those are my best guesses as to a fix.
Mark