I only have 1 device connected when I try to do anything, due to this issue. I don't dare have my pc ethernet enabled while trying to stream on a fire-stick or my kindle. If we try to watch anything on the fire-stick, I will disable/shut off my pc. I get the same results on all my devices (pc included) no matter what time of day, day of week etc... 1 device connected at a time always. Ive tweaked every thing I possibly can on the modem over the past month trying to figure this out, and nothing works. You name it, I have tried it if allowed.
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