This particular method is unlikely to tax your elderly CPU any extra. It is just allowing other supporting data (CSS and script files) to be downloaded while th

This particular method is unlikely to tax your elderly CPU any extra. It is just allowing other supporting data (CSS and script files) to be downloaded while the server churns creating the rest of the content (perhaps waiting for slow DB replies). I expect AirBnB is already unpleasant on such a machine, this won't make it any worse!