@MichaelB2, I understand you mentioned CAT6 cable, so I'm assuming these speed tests were conducted on a hard-wired connection and not WiFi? I am providing information on how to achieve Gigablast speeds:
www.cox.com/.../achieve-gigablast-speeds.html
What download speeds are you receiving? Please make sure your device is capable of obtaining those speeds, and that it is up-to-date with the latest software/firmware. For additional support, please feel free to reach out to us at cox.help@cox.com, Twitter, or Facebook. -Kevin M. Cox Support Forum Moderator