[MX] MovieClip Slowing down

Alright, I have a problem with my movie clips slowing down when another movieClip is being played. I have the interface and transition completed, but everytime u click a button, the transition element moves extremely slow, because my buttons themselves contain movieClips. Is there anyway to have the movieClips move at proper speed, even if they overlap one another, and play at the same time? thanks in advance