I think this needs a new server box and provider. 12th server is good, maybe Tico can give you the info of the provider.
Isn't it BlueFang?
I have literally no clue. All I know is that 7NA_Groupfootin is mostly laggy for me, even if not extremely but then every once in a while it goes balistic with lag. Also, my ping is higher here than on 12th ES.
Also smaller maps would be great. NA GF servers are a lot less populated than EU, yet the maps are equally large or larger. This only encourages duels and not proper Groupfighting. Make the maps smaller!