First, I would like to congratulate the author of this plugin. it's clean, simple and easy to use, really a very very good plugin.
I have a very high traffic wordpress site with about a millon pageviews per day, my setup is to usually cache everything in the frontend and use reverse proxies to my wordpress install which used APC and memcached, all in all, performance is really really good.
I noticed after installing this plugin server load spiked dramatically and while checking the logs noticed hundreds of requests like this:
Why is the CSS and JS loaded dynamically with each request via ajax? it's expensive and does not scale well... or am I missing something obvious?