Why does grid draw too slow like Flash Player 10.x and 11.x?

Why do you write haxe?? But i have said “AS3” not Haxe Thanks for understand

I am surpised because Spark SpriteVisualElement is very faster than Bitmap, Shape or Sprite. I am shocking because i am initial trying to Flash App with Adobe Air That is why it is faster than Bitmap if spritevisualelement draws grid larger than 32768 uints.

65356 = 2 sec
32768 = 1 sec
16384 = 1/2 sec
8192 = 0 sec

Wow it is so fast. Why does it happen with Flex SDK and it draws very very faster than Haxe. Wow I can not believe that.