None of this is relevant unless you tighten your coax F-connector on the wall plate and the back of the modem. If it's even slightly loose you've got ingress. Which means packet loss, slower speeds, modem resets, T3 timeouts, ect... So do yourself a favor and make sure those fittings are adequately tightened. Oh and one more thing. Don't go cheap on the coax cable. Use RG6 tri shield or better. 98% of internet trouble calls to your Cable ISP are caused by these two things.