Well it means they over sold service and bandwidth in your neighborhood. Cox operates a lot like the Airline industry does now. They oversell what their pipeline can handle with the assumption that not everyone is going to be using the service at the same time. Like airlines over selling seats assuming not everyone is going to show up for every flight. Technically they should not sell you a product their hardware and pipeline cant handle just because everyone is using at it a single moment in time. They can upgrade the node or split the node to fix it.