I'm having the same problem. Two Xfinity Residential Techs have come to my house, checked the wiring and set up in my house and have both determined the issue is an infrastructure issue, and have turned in work requests. The second Tech who came to my house on 5/10/20 told me his boss wanted him to let me know he was going to make sure the issue was fixed that same day. Well, here we are two days later and the issue has NOT been fixed.
