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I had my Arris gateway replaced yesterday after a complete failure. Last night, I tried to stream video and was presented with an insufficient bandwidth message. Several speed tests were all 6k plus, however I noticed that my tv and another wifi connected device are on the 5 Ghz band. Also, according to the connected devices report, there are 6 or 7 wired devices, 4 of which are unknown to me. How can I get my tv back on the 2.4 band as it was prior to this current headache inducing situation. Thanks!