When I had trouble constantly with cableone, after calling them several times, one finally told me that the issue is probably from using an "outdated" docsis 2.0 cable modem. upgrading to a docsis 3.0 cable modem fixed the issue for me.
Went from some old Dlink (think dmc 202)
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help.cableone.net/HSD/Mo ··· ied.aspxMotorola SURFboard SB6120
fixed my constant lagging/disconnection randomness problem