there are a lot of movieclips (about 1000), attached to stage
using attachMovie. no movie has mouse event functions (such as
onRollOver, etc), movies are only square shapes without any code.
when mouse doesn't move - all is ok, but when it begin to move over
those movies, CPU usage grows up to 30-40%
is it possible to make those movies to ignore any mouse
events and prevent growth of CPU usage?
If they don't have mouse events then I don't believe so. If
they all have onEnterFrame code you may be able to reduce it by
consolidating to one central onEnterFrame handler, but it doesn't
sound like that is relevant.
As an experiment, try moving your mouse around rapidly over
the main actionscript forum webpage and take a look at your CPU
usage. I'm not saying that's a good comparator (after all the js in
the webpage may have a lot of mouse handlers running), but my
laptop (which isn't very powerful) whips up to 100% CPU on the
webpage alone. Other web pages are not so greedy but can get up to
30-40% in bursts for me without using flash. It just depends on
your processor/system specs I guess.