I run a site on a VPS with GoDaddy. The site on average is taking 11-15 seconds to load. Much of it seems to be waiting for the server to respond. The site is run on Wordpress and I am using W3 Cache with most options enabled. When I use Pingdom, it says just the initial connect to my server the wait time is upwards of 6 seconds. Connect, send is fast. Wait is slow. Receive is fast. What I can do?