First let me say that I am not very tech savvy. I have been using my Xbox to play online multiplayer call of duty Modern Warfare 2 and Black Ops as well as using it for streaming Netflix. I was using this through a wireless connection. I have a fiber optic internet service through Verizon which uses a modem and N/g, and was using the offical xbox g-wireless network adapter. This was working perfectly well until about one week ago.
My Netflix and gaming play almost never ran slow. However about one week ago anytime I try to stream anything or play online multiplayer it runs very slow. When I test the connection from Xbox dashboard, it always comes up as at least 3 bars and usually 4 bars. Yet, when I'm using Netflix it will come up with 0 or maybe 1 bar. I thought it was possibly just Netflix, but the result was the same streaming other videos through things such as NBC news. Also, playing online was never a problem, and virtually no lag or difficulty connecting. Now it takes a very long time to get into a game and then it nearly always lags. Many times I get booted out of games as well.
Again this is completely new. Up until about 7-10 days ago it worked completely fine, but now am having these problems. I have not moved my router or placed anything in between the router and xbox. I tried some of the tips that were mentioned in the troubleshooting page, but without any benefit. Any help would be appreciated.