Optimizing my dynamic background engine for a 2d flash game in actionscript-3

Question

Edit 2: judging on the lack of replies I start wondering if my issue is clear enough. Please tell me if I need to elaborate more.

Notice: see bottom for a co

Answer 1

You may want to see if you can blit all of the pieces together into a flattend Bitmaps as you go. Draw all of the layers and then use BitmapData's draw method to combine them into a single Bitmap.

Even with cacheAsBitmap on for all of the pieces Flash is still having to combine all of those pieces every frame.