I bought this as a replacement for WP Rocket, because one of websites simply wouldn't work with WP Rocket, and this one worked great. In fact we have now installed it on several others sites, and we're getting higher page speed scores on almost all sites (they were already pretty high for most of them). While we haven't used it for a long time yet, after a few days I think this will be our goto plugin for page speed issues. Nice work.