Google page speed report - Reduce server response time


Apr 7, 2016
cPanel Access Level
Root Administrator
I have a system with whm/cpanel installed and for all the sites hosted there i get a "
Improve Server Response Time" on Google Page Speed tools. All the sites are wordpress and i get this message even on pages that show 1 small image .

Thease are the official explanations from Google : Improve Server Response Time | PageSpeed Insights | Google Developers

Can somebody give some advices about how i can " reduce your server response time under 200ms. " . Is there are any free tools i can use to see where are some possible bottle necks ?

Also online web testers like GTmetrix | Website Speed and Performance Optimization give me a TTFB to 1,4 seconds and from i know a good TTFB should be much lower . Any idea on this direction ?

Thank you