I love this plugin but the non stop update checks and curl errors this plugin throws out about every 5 minutes or less just totally kills site performance and is quite irritating. Makes me want to stop using this plugin along with wpbakery. If you keep an eye on query monitor, this plugin and wpbakery are the 2 worst plugins out of every thing I use or test and can cause lag times of up to about 15 seconds before the site decides it's going to respond. Loading the extensions to it makes it even worse because query monitor then shows that you get a curl error, then every single extension has update check redirects (mousetrap, particles, slices etc.) I've managed to get it down to about 1.5 seconds but that still does wonky things with your metrics in the end.