Hi,
Whilst working on a custom setup for this, I've come across a little performance tweak (for me anyway!), I'm not sure what repercussions there will be later on so don't hold me to it!
What I was trying to do was start converting pages with alot of copy to bitmaps before they are added, however a thought ahead led me to think that this would have a dramatic effect on if I was going to start using flv's and whatnot.
So just to do a quick tester for any other method to get the pages faster for lots of copy (I'm on 1920x1200 so with liquid scaling it was getting a bit slow at turning), I just placed a simple cacheAsBitmap for the element, it sorted the speed ten-fold, but like I said I haven't seen the repercussions of this yet.
Either way, for those sort of pages it upped the performance nicely.
Anyway, its in the Pages.as file:
(nr line 193)
// Add at lowest level, so we do not override foldeffects and shadows.
var index:int = (_elements as Array).indexOf(ele);
var cont:DisplayObjectContainer = _pageContainer;
ele.element.cacheAsBitmap = true;
Seemed to do the trick for me, incase it helps anyone else.