Home page is opening too late

I just opened the website but when i open website on browser first time,  homepage is opening too late.
there is only 10 questions & i have only 6 plugins.
without cache: http://prntscr.com/krif0q
with cache: http://prntscr.com/krig0i
can you help me? i dont understand why so late loading page\’s, post\’s.