To many glitches
This review is after my thoroughly trying out the plugin on four of my websites. I will say according to what the plugin tells you, your site speeds are supposedly in the 90 plus range. However, GTMetrixs, PageSpeed and others varied so wildly with terrible degraded metrics that I could not verify consistently what my actual site speeds were.
So I manually verified what the actual page load times were for each of my websites both on mobile and desktop devices. What I noticed was the page loading speeds were subpar to the suggested RabbitLoader speeds. Another awful glitch that I thought I had fixed, but came back after about 30 hours was a 2.5 to 3 second blacked out front page. Turning off the JS optimization feature made no difference either only deactivating the plugin returned my sites to a normal state. Had my websites actually reached the 90 plus speed range wouldn't have mattered to much anyways when the plugin caused my front page to be blacked out for up to 3 seconds. Refunded