Redraw performance

In short, how to increase the redraw performance?

In long:

I have an animation (MovieClip) which is very big in dimension ( 2000 x 2000 pixels). I put the animation inside a canvas, which is relatively small in dimension (500 x 500 pixels). I’ve set the “clipContent” property of the canvas to true, but the stuff outside the canvas is still redrawn, although not shown.

This will greatly decrease the performance. How could I instruct the flash player to stop unnecessary redraw?