Using the Fill tool

I have an issue with the fill. I like the way that some thing change right when I'm changing the color but most times. I can change a simple box to red and the screen goes black, the computer is thinking, I can go get coffee, check mail on iPhone and come back 5 actual minutes and its still sitting there.

Is there a way to turn the magic off? Where I can open the fill box, change the color and when I close it, its there. Not automatic. It take a really long time for the color to "happen" on the screen.