Great advice, but first check your router. I'm no computer/network technician, If your current router was purchased when China was hosting the summer Olympics, the issue is probably your router dying a slow death. Hard wiring probably won't help much, and putting your console in a DMZ likely would be as effective as putting your console in THE DMZ. Otherwise, like I said, great advice.
English
-
even a linksys wrt54g can deal with port forwarding at 1mbps :)