Layout best practices with TLF

Hello everybody.. i hope someone can give me a tip on a mobile App i'm developing.

When pressing a button, i have to refresh a screen which contains 40+ clips.

I evaluate an array, and for each entry i call a function to create the relative item.

Basically i:

- create new instance from library

- resize it to fit the screen size

- replace a movieclip inside the instance with a TLF

- create a bitmapdata

- drawWithQuality of the instance (using a matrix)

- create bitmap

- set the bitmap position

- add the bitmap to the holder movieclip

This routine seems very slow (8-10 seconds to refresh), i guess a problem is given by the TLF which is quite heavy, but maybe i'm also doing something wrong with the logic..

Any suggestion?

Thanks!