Best Answer Danny , 05 February 2013 - 01:00 PM
Yeah 51 slides is a bit extreme and is most likely the cause of your performance issue. However, the sheer number of sites on your server isn't helping, 1000 sites is an insane amount to be honest.
Also, to change the order of the Feature sliders and other elements such as boxes, banners etc.. you will need to use a plugin called Post Type Order, which allows you to organise your features, boxes and banners using drag and drop.
Your background image is very large, over 300kb, this image should be reduced in size. The point behind the Supersize background is that your image doesn't have to be huge inorder to fill your screens real estate, as it will supersize the image accordingly to whatever size.
So I recommend you reduce your image size, you can either reduce the actual dimensions or use a tool to reduce the file size, doing both methods is highly recommended.
If you're a Mac user, you can use something called jPegMini, which can reduce your image file size by x5.
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