Ok, well cable you should be good then. DSL has internal routers that can cause issues. However I would run thru the Gamefuel settings and see if this might help some. What Hardware version is your 4500? Will be A1 or A2, A2 have seen people have issues with. Mines A1 and I'm on cable, aside for the past few days my ISP has been up and down here and there, I use the Gamefuel settings, Reserved IPs and enjoy XBL and Netflix. Let us know