To cause Waiting (TTFB) too long

VPS 1core 1GB
CentOS 7.3 64b
Nginx 1.14
php 7.3.1
Wordpress 5.1

Page loading too slow theses days, debugged for hours then I found:

If “SMTP mail” plugin activated, the “Waiting (TTFB)” will be 2 or 3 seconds, sometimes 10seconds more, still don’t know why.

If deactivate the plugin, according to Chorme’s debug ui, the Waiting (TTFB) time will be reduced to less than 80ms, which is huge improve.

Love this plugin, dont wanna give up.

Any solutions about this issue? Thank you and good job.

• This topic was modified 5 years, 8 months ago by Duke Yin.