I am having the same problem. Cox sent some technicians to my area last week and whatever they did made a huge improvement to my upload speed. Now a few days later the slow upload speed is back. It makes video calls impossible. I am working overseas currently and remote into my home PC to help my kids with homework. That is nearly impossible with the slow upload speed. Cox's response is that they want to schedule a technician to come out to my house. And if they have to go inside then there will be a $75 charge. I have not done anything to connections inside my house. I have read many other complaints about this same issue in this forum and from google search. And I have yet to read about a solution. The prevailing opinion is that Cox's network has become overwhelmed with so many working from home and using Zoom, video calls, etc. Cos is the only high speed option where I live so I feel helpless. And my ability to communicate with my family is severely degraded.
Im in the same boat, we have has some really cold weather where I live which may be a little bit of the issue. However that would not explain the fact im getting normal upload speeds during the day and early in the morning but tanking during prime time hours.
