[1403] Loading index.html page for the first time ，all routes JS are loaded together

Loading index.html page for the first time ，all routes JS are loaded together。Although some of the files are not loaded, each time the request is large，I wonder if you can load as much as vue - router。and This is the first time the official website has been loaded @pi0 @Atinux @alexchopin and Version 0.9.9 does not have this problem i user performance.prefetch ,but it No role