I had a very similar situation when I used to live in Belmont MA.
I had DSL and was good in the afternoon and evening but early morning the connection speed was atrocious. After numerous calls to tech support and 2 techs coming out there was no solution. The replaced all the outside cabling and inside devices.
Finally an IT guy at work who lived a couple streets over told me to ask about the line from the pole to the house. Turns out it was dropped 40 years earlier and had cracks all over the sheathing allowing moisture that collected late at night to seep in. That killed my morning connection but by midday on most days it would dry out enough to work. Once they dropped a new line I had perfect connection.
That most definitely could be a problem. Moisture could easily enter the cable end.
I had a very similar situation when I used to live in Belmont MA.
I had DSL and was good in the afternoon and evening but early morning the connection speed was atrocious. After numerous calls to tech support and 2 techs coming out there was no solution. The replaced all the outside cabling and inside devices.
Finally an IT guy at work who lived a couple streets over told me to ask about the line from the pole to the house. Turns out it was dropped 40 years earlier and had cracks all over the sheathing allowing moisture that collected late at night to seep in. That killed my morning connection but by midday on most days it would dry out enough to work. Once they dropped a new line I had perfect connection.
That most definitely could be a problem. Moisture could easily enter the cable end.