My website slow on transfering data, why?

November 4, 2017 195 views
Nginx Ubuntu 16.04

I just moved my site to VPS here and tested the site on GTMetrix, the result is the site is slow. The problem seems because slow data rate transfer You can see the first download, the site's html, took really long time.

On a peak time my site have 500+ active users on Analytics, but now only left 300+, my ranks are fine, so it seems because of connection problem. My site's using W3TC so although I have a lot of visitors the resource usage is low.

How can I solve this problem? Thanks

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