Very nice plugin and super-fast

To get my site to load in under 1.5 seconds ~ the Google threshold for slow sites ~ you can probably use just about any caching system, and still only be able to get it down to about 3.5 seconds.

What I did was to use WP Rocket ~ which produced the 3.5 seconds ~ and then added to it Rocket Lazy Load which allowed me to lazy load all those Gravatars that were slowing the page load down.

Now the site is below 1.5 seconds, or even 1 second, if you believe Pingdom.

Awesome plugin!