# Animating in CS4 running very slow compared to CS3?

**URL:** <https://forum.kirupa.com/t/animating-in-cs4-running-very-slow-compared-to-cs3/273808>\
**Category:** flash\
**Created:** [October 21, 2008, 7:31am UTC](https://forum.kirupa.com/t/animating-in-cs4-running-very-slow-compared-to-cs3/273808 "2008-10-21T07:31:32Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Ranoka](https://yyz1.discourse-cdn.com/flex011/user_avatar/forum.kirupa.com/ranoka/32/265_2.png) [@Ranoka](https://forum.kirupa.com/u/Ranoka)\
**Post date:** [October 21, 2008, 7:31am UTC](https://forum.kirupa.com/t/animating-in-cs4-running-very-slow-compared-to-cs3/273808/1 "2008-10-21T07:31:32Z")

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On Flash Kit there is a thread that is worrying me because I haven’t used CS4 yet but by the sounds of things people are finding it run really slow when you use CS4 for animating or open a CS3 file that would normally run fast.

So far we’ve only heard from Mac users, has anyone on PC found the same thing?

[http://board.flashkit.com/board/showthread.php?t=780172](http://board.flashkit.com/board/showthread.php?t=780172)