Internet speed (via Cox) is at or above 1000 Mbps. Yesterday (6/19) speeds was at  731 download, speed went steadily down and now all three Deco unit speeds are around 9.45 Mbps download, 9.67 upload. Have tried rebooting several times, and all are up to date. Tried the recommended fixes but I don't have a QoS option in the app or the desktop site. Am wondering if someone in the household inadvertently throttled the speeds or if there is another simple issue I am missing. Any help at all is very appreciated.