General rule of the internet, if everyone else isn't lagging, it's probably not the server.
Either you or your isp and by association any route used by your isp is having some sort of trouble. This can range from either high traffic volume or fishermen or a number of other reasons. Fastest way's pinging locations around the game servers.
I worked several years in tech support with an ISP and in that time most folks who called us had the same attitude that the problem was in no way on their side of things. The servers are not lagging or there would be a mountain of posts ascertaining to that. If you just got a T3 connection ( which btw isn't all that fast nowadays) then most likely there isi something in your wiring, hardware, routing, or isp that is causing your latency. PLease refer to the support FAQ and run the tests indicated there and you will likely find the reason you are lagging.
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Either you or your isp and by association any route used by your isp is having some sort of trouble. This can range from either high traffic volume or fishermen or a number of other reasons. Fastest way's pinging locations around the game servers.