When loading the landing page, section is shown first and then the header

Hi, I am not sure if this is a problem of the theme, a slow host or something else. but I've noticed, that when loadin the page you first see (partly) the first section and only later the top position with the fullview of the header image. Any advise how I can make the page load right away in the desired position? The page is available via ashantidance.com, in case you want to see how it behaves for yourself.