I hit my usage limits very fast after installing the plugin.
You have reached entry processes (number of simultaneously running php and cgi scripts, as well as cron jobs and shell sessions) limit 189 times
Memory shot up to 512mb too.
Site slowed to a snails pace, now i have W3 Total Cache installed too, perhaps it doesn't play well with it, whatever the case may be i am uninstalling the plugin for obvious reasons before my webhost bans me.
The whole point of this plugin should be to speed up sites and help with the resources, not hit you with a sledgehammer and overuse resources.
Shame it didn't work, i used the default settings, perhaps it needs to be expertly setup, who knows, i hope you can improve the plugin.