Alyria said:
Ethernet ftw ^^ I have both but never use the wireless on xbox unless I was travelling. It really depends what you are doing on the connection, if you have multiple PC's running on the internet at same time and other consoles attached to the connection it will slow it down in connection.
it may slow the connection but not the signal strength. Signal depends on the range of the router itself, the matrieals it needs to go through and of course the distance. Ifyou router has antennas on it try adjusting them. if you can rotate the signal to a more direct sending pattern, you may receive something better. Example, if you imagine the antenna "standing" straight up and down, the signal "is sent from off the sides. (((T))) as such. So if you move it to a horzontal position, this will now move the signal to a up and down position. Make sense? So if your router is upstairs and diagnally across move the antenna into a diagnol position as well so your signal is basically being "sent" in the direction best needed to reach your 360. New and Better non antenna style routers are out there and I would agree if possible to just hardwire, but give this a try if feasible. Good luck! ;)