fps performance caused by garbage collection?

[Mike Konstant]

I have recently dropped the thread in place of a Director() call that save the data to a file. This improves the performance slightly, however I still notice a drop of performance from 60fps to 53fps. Is there a way to set the priority of the Director() call, to a low priority so the thread takes it time to save the file (save the file over a couple seconds as opposed to < 1 second). Adding numerious time.sleeps() does not seem to be a clean way to reduce the priority.