And are you playing AH over the wireless connection, or do you have a cat5 cable connecting your gaming machine to the router?
FWIW, I hooked up about 100 computers to a T1 for the 2002 Warbirds Con with nothing more special than a consumer-grade Linksys DSL Router. I was then using it at my house until just two months ago, with a Linksys Wireless router.
So it is possible to get good gaming from one of these things...
-Llama