Projector Frame Rate

I have been having repeated trobules with Director projector
presentations playback speed, it seems to run smooth at times and
slow/jerky at other times.



One case in particular infolves the playback of a film loop
created in director by animating a series of 100 frame JPG images,
and there are no transparency overlays and no scaling. There are no
other actions occuring at the same time as playback. The playback
from the projector file is very inconsistant.



Is there anything software related I can do about this? Or
just suggestions on how I can get a more consistant playback speed
or speed it up in general?



The machine Im playing it back on is new and has adequate (i
think) RAM and processor speed to be playing back these
applications, and I am playing the projector off of the hard drive
(not a CD or network).