We have installed W3 Total cache plugin to speed up your site and it improved the speed. To get better results with site optimization you may contact WPKaken team, they have specialists with site optimization and will be able to help you because that is outside the scope of our support, unfortunately.
yesterday you activated the W3 total cache plugin: now the site is faster (thanks) but does not load the contents of the pages in correct way.
Every time you have to refresh the page to load all the contents. Maybe it’s that setting of the plugin that needs to be changed?