Try wrapping the section which has the piechart with a div or a [wrap] shortcode with id stats-section like this [wrap id=”stats-section”] and see if it is any better. There is an issue with the theme expecting a id stats-section for the section wrapping the pie chart modules.
Have you tried setting the option “Disable Sliders and Disable Home Page Slider Area Widget” in the page edit window? Also, if you set a background of width 1920px or above, the theme will avoid oversizing of the background to cover the whole area of the segment. You just need to provide an image of sufficient width so that it covers the whole width of the segment.
Hope this helps.