Well, I got bored of waiting for people to come into the server, and that the dl is so slow very people might get in so I did some reasearch. It looks like, to me, that the maps are downloading directly off from the server, which is very slow probably because if it was a fast dl, it would lag the server or something. I type in sv_downloadurl and it said it was set to nothing so, maybe if you uploaded the maps to your website and set the maps to dl from here, the dl would go faster, just my 2 cents. Hope this works, if not i'm a total idiot and ignore everything of what I just said.
Edit 1: If that doesnt work than, direct people to either gamebanana.com or tf2maps.net they have a majority of the maps that are in the server.
Edit 1: If that doesnt work than, direct people to either gamebanana.com or tf2maps.net they have a majority of the maps that are in the server.