Frame 8...?

Ok, heres the problem. When i got to export my animation, it always slows down on the eighth frame exactly when its doing the ravid thing. I mean it will take 5-10 per frame until it gets to the eighth frame, then it takes about 20 minutes a frame…why? Is there anything im doing wrong???

it takes 5-10 seconds per frame at first.

Some portions of the animation might have numerous edges that take a long time for your processor to process. You really cannot avoid that unless you have any background programs running.