I'm having a heck of a time. I've put this off because of more important issues but now I'm fussing
The sites are hosted on a digital ocean droplet - Ubuntu. Sadly the TTFB is very poor - some times up to 5 seconds. After changing plugins and skins, Pingdom tools is showing the wait time now around 1.5 seconds but it can increase to over 5 seconds.
Besides MySQL Tuner - what tools are available to figure out why the wait time is so long. After all, many sites are 300 ms and mine are up to ten times that ....