On my Internet, if I am playing Xbox, and my wife is in her computer my connection drops to a one bar or I am disconnected altogether. Also, if we both are on our computers then we both experience significantly slower speeds. How can I fix this issue and what would the primary cause be? I've tried the modem, the router, changing wifi channels, etc.
Software/Hardware used: Xbox 360, 2 MacBook pros, time Warner cable, belkin router n300