If that edited link is the right one (I suspect it is, not doubting @carl_pearce ) then the one thing we can say is that this is not over-utilisation. There's some unwelcome high latency peaks, but most of the time it's looking like a reasonable trace for a DOCSIS connection. And it's either a Hub 3 that's geographically very close to the CMTS, or a Hub 4, judging by the performance between 3am and 8am.
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