I am not sure what to think about this. I added the plugin to two of my non-critical sites and the loading speed got considerably worse.

I used wp-rocket and a cdn for both sites before and after installing RabbitLoader, I deactivated both (wp-rocket and the cdn) and the loading speed went downhill. I also noticed that my sites did not load any images or icons anymore on mobile after installing RabbitLoader.

Unfortunately, support is non-existant (or only available via email) which makes the whole thing pretty unusable.