Slow on one computer... fast on another?

programming
1

Hello. I made a game using a very slow and old PC, and as expected… it runs slow when i play it. I played it on a decent PC and it runs perfect. Then I played it on my brand new iMac and its in SLOW motion. No other game that I have played on the internet with my iMac is in slow motion.

I made it using actionscript 2.

I am using setInterval to move my movieclips.

I am using flash MX…

Any body know why my game is running slow on one computer and fast on another?
(Didn’t think I needed to post my code for this. Correct me if I’m wrong.)

thanks.