Please provide more information about what you have tried to design.
In my project I have used plenty of motion tweens
actually my project is DEMONSTRATION OF IGCC (Integrated Gasification Combined Cycle) USING FLASH
I have to make effect of fluid flowing through pipe
for that I used many layers, masking, motion tweens (nearly 700 layers I used)
As increasing the number of layers in test movie as well as exported swf playing slowly
It is very slow such that my project is not effective to see
plzz help me in this
I will be very thankful to you
I don't know enough to be able to tell you processing limits, but my guess is you are beyond pushing them with the number of timeline tweens you might have happening all at the same time.