That is from whats called line jitter. Due to cox not having sufficient infrastructure and over selling bandwidth packages on infrastructure they knew could not support that many users tied into one CTMS/Node, your data packets get delayed in timing at the CTMS/node and even packets will be lost all together. Nothing you can do to fix it on your end, takes Cox doing infrastructure upgrades. Which at this point it appears has been neglected on a very large scale, they likely cant even resolve this in a timely manner if they wanted to. It will be interesting to see if anything comes of this as more of this is surfaced. I am almost willing to bet they neglected the upgrades only to build their fiber network to start charging more for fiber and push customers off cable and hope that mix balanced itself out without having to spend any money on the cable network. Which likely would of worked since it would of isolated packet loss and jitter between 5pm and 10pm giving them a viable excuse that is easier to explain it all. But now with shelter in place orders, and networks being used at the capacity in which they sold but did not actually have, well the curtain essentially has come down.