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

The problem goes away for me when I remove the background-size property. I think it was the scaling of the large image that was causing the problem. If that doesn't work, just remove the background image altogether. However, I've never heard of a large background image causing lag before.