Can making image a background slow down the working of the page

Question

I have created my own website, not much complicated. But when I change the background to image from a simple color everything runs very slow on the site, all the animation and everything.

Working CSS Code:

body{    
    color:#eee; 
        background-color: grey;      

}

CSS that makes website slow:

body{

    color:#eee;
    background-image:url("images/bodyImage3.jpg");
        background-size: 1400px;

}

Answer 1

Yes it will. Try background-position: fixed, might help.

Answer 2

Yes, a 1400px image can slow down a site.