My fixed background made scrolling the site very slow, what can I do to improve it?

Question

I changed the background of my discussion forum using the CSS below

http://forum.antinovaordemmundial.com

html {
    background: url(http://antinovao         


        

Answer 1

Also, applying the following style to the html tag improves the frame rate significantly in WebKit browsers, Chrome included:

-webkit-transform: translate3d(0,0,0);

This works in all cases with (large) background photos and choppy scrolling as far as I can tell.