Actionscript 3 and flash topic

i realized something this week which probably many knew.

if i do any effects in flash cs4 (meaning use flash to do graphic art with effects) it will for some reason consume so much resource…
ex: i have a swf which plays fine on its own and uses 10% resource cpu already on my quad… when i create a graphic glow effect made in flash to the video layer (video is loaded externally and its a 3d 40sec animation)… cpu usage when i play swf with the glow effect goes up to 23-30%…

very odd…

if i try to load via actionscript 3 the effects totally; meaning make the rectangle - size it and load it externally, then uses 16% cpu usage about…

this is very very odd unless something i doing wrong… or i missing something… my project is 2% done and already this cpu usage issue…

any info or help on this???