Flash speed not identical between IE & FlashPlayer ?

Question

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Hi!
I've a curious thing.
I've build a little test fla, timed to 30fps
I've put inside a small component to display the real fps.
When testing my fla under FlashPlayer or Flash editor, I get
the 30fps.
But when testing under IE (or Firefox), It's go down to 23fps
Somebody has an idea ???
Here is somes url :
For testing :
http://www.marciacq.org/Flash/fps.html
Sources :
http://www.marciacq.org/Flash/fps.swf
http://www.marciacq.org/Flash/fps.fla
Thanks for you help !
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Answer 1

There are multiple issues like that, it is not really
consideres a bug though but it is that way by design - the
consequence is not to rely on framerates.
All timing in flashplayer is related to the framerate in one
or the other way, even setInterval is.