flash - Performance issue with swf having text content while using in page Flip class -

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i have pageflip project , have 15 swf. of swf having image content loading(fliping effect) smoothly , if swf having text content loading slowly. 

var ocf:object = pageflip.computeflip (this.pagecorner.clone(),                                                         this.lastflippedcorner,                                                         this.width/2,                                                         this.height,                                                         !this.tearactive,                                                         1);                   pageflip.drawbitmapsheet (ocf,                                             this.render,                                             this.bitmapdata[frontindex],                                             this.bitmapdata[backindex]);

any 1 please tel me possible error while handling swf image , text content. there difference in process of these 2 kind of swfs

http://code.google.com/p/ricardo-flex/source/browse/trunk/libro1/com/foxaweb/pageflip/pageflip.as?r=7

as understand, kind performance issue caused not setting swfobj.cacheasbitmap property true. flash player has recompute positions of each vector element(text, shapes etc) on each frame update.

one solution setting cacheasbitmap true loaded swfs.


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