Internet speed changes drastically from room to room in General Discussion Posted November 6, 2015 · Report reply I had old wiring . It got replaced and nothing has changed other than that . My modem is the same and in the same spot but my Son complains about his xbox . My ISP says they cannot guarantee wireless speeds , only wired. I get roughly 10-11 mbps wired. He gets maybe 2-3 wireless so not much difference for him only me.. He's so mad. He thought it would be better with the new wiring.