Your total time for DNS is 486ms, which is OK. So the loading time issue is not with the hosting: http://prntscr.com/uw69rh
You need to optimize your site for a faster loading. It looks like getting rid of the Fontawesome alone can save you a massive 2,580ms: http://prntscr.com/uw6bd9
So start with that. Replace all of your icons with inline SVGs. Then follow the other recommendations by the PSI tool.