I'm not going to start celebrating just yet as I know things can get busier later on this afternoon so I'll keep and eye on it. I might put my own modem back online and see if the speeds stay the same and if it does then I can return my COX modem.
You should definitely give them a call and maybe you can reference my ticket# and have them do the same type of investigation in your area. They need to fix issues like this especially now that so many people are working from home.
As I type this I see some of the COX bucket trucks now leaving my neighborhood. 🙂
Good luck to you and keep us posted on your efforts. Maybe our stories can help other people in the same situation as ours.