# Mouse on screen causing slowdown?

**URL:** <https://forum.kirupa.com/t/mouse-on-screen-causing-slowdown/306575>\
**Category:** flash\
**Created:** [March 17, 2010, 8:03pm UTC](https://forum.kirupa.com/t/mouse-on-screen-causing-slowdown/306575 "2010-03-17T20:03:19Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![ubergoten](https://avatars.discourse-cdn.com/v4/letter/u/dec6dc/32.png) [@ubergoten](https://forum.kirupa.com/u/ubergoten)\
**Post date:** [March 17, 2010, 8:03pm UTC](https://forum.kirupa.com/t/mouse-on-screen-causing-slowdown/306575/1 "2010-03-17T20:03:19Z")

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Hey everyone,

I have a game that has around 400 movie clips in it and whenever I mouse over the stage the FPS drops to around 8-15. I tried setting Mouse.hide() and mouseEnabled = false but it doesn’t seem to do anything

help!!