I have a 10 second page load time on Drupal 7.52. It has the approximately the same problem on localhost and my server.
On my localhost (WAMP) Apache uses an insignificant amount of CPU (3% or less). There is no sign of the localhost being limited by CPU, RAM, or Disk.
The MySQL queries are fast (50-250 ms total time). My page generation time is fast (100-350 ms).
Due to my server setup I cannot use APC.
I've tried searching for answers but most of the people are complaining about high cpu. I've got low cpu usage which is very weird.
I've tried disabling a lot of the modules and it didn't help.
How can I debug what is causing this slowness?
The website is www.energyjustice.net