You call that slow? It renders with no delay on my dual core 3.5W TDP Core i7-Y (formerly known as Core-m) over WiFi with one floor and one dry wall in between. Either you need a faster computer or you need to fire your ISP.
I will reconsider my symmetric gigabit ISP, and consider one that can perform data teleportation. Or.. realize that not all of us are located in US, which is the location of the webserver.
I get a 180ms ping time to the domain, which doesn't help in handshaking all those individual TCP connections at all given the HTTP 1.1 protocol. No wonder the 6 second load time to a single product page.
But I suppose it's not a fast webserver anyway, as 1.1 seconds "wait time" for just the HTML isn't particularly fast. It seems to be shared with another (backend?) avnet domain, which probably has enough load already going to it.