I have pretty well-optimized website, PageSpeed Insights tool shows good results, but Google keeps saying reduce server response time which is 0.46 seconds. And it must not be greater than 200ms.
I have tried to delete all my htaccess content, then replace index.php with an empty index.html file, but server response remained the same. I am using a virtual private server with Debian 7and storing 2 websites with SSL on different IP addresses. The second site responds perfectly in 144 ms.
So, I can't find the reason why one site loads under 200ms and other in 460ms. I'm pretty sure that server has enough resources.
I would be grateful for the ideas.