ActionScript 3.0 :: Make A Cool Water Effect Using Bitmap Data And A Displacement Filter?

I found a tutorial on how to make a cool water effect in as3 using bitmap data and a displacement filter. It works great but it is very heavy on the computer.

here is my code

Code:
var bmd:BitmapData = new BitmapData(700, 398);
var dmf:DisplacementMapFilter = new DisplacementMapFilter(bmd, new Point(0,0), 1, 2, 10, 30);
var p1:Point = new Point(0, 0);
var p2:Point = new Point(0, 0);

[code]....