We run two multisite installations of WordPress, and we noticed one of them had only limited lag from initial connection, while the other one had to connect every time.
This is the site with little lag:
http://www.webpagetest.org/result/131018_N6_Q5V/
And this is the one without:
http://www.webpagetest.org/result/131018_SA_R9Z/
We use WPEngine to host both installations. The second one has a different login system that’s hooked up to our database. Any thoughts on how we can get rid of connection time?