Flash doesnt look right in IE and lags in FF

When im in FF the flash looks right and does wat its supposed to but i have divs overlaying it and it lags in a wierd way and only through certain divs. The flash file should not lag at all cuz its only 5kb and 95% actionscript. In IE there is no lag but it does work right. i have stars that are falling and start at random positions but in IE the y value is the same for all the stars. and also there is another flash on the page that doesnt want to show in IE.

EDIT: discovered that u cant use Stage.width/height in IE as soon as the movie loads