Error Codes with official Xfinity router which causes outages every couple of hours for a few seconds

The Downstream SNR are between 41.3-42.5 dB

Downstream power levels are between 7.2-9.0 dBmV

I checked online and these seem to be within reasonable levels with power levels being a tad bit high. However, despite the levels there are sever levels of uncorrectable codewords across multiple downstream channels with many channels showing between 20k and 253k of uncorrectable packets. To make matters worse these uncorrectable codewords seem to be steadily growing over short periods. 

The main symptoms experience is frequent internet drops for a few seconds at random times across all devices with a quick reconnection after drops (some wireless devices lose connection when this happens) I personally believe this is an issue with the line outside, but I am not an expert.

some extra info:

Awesome! Thank you, @user_9t9bs9. The signals are a bit on the higher end, but within our network specifications. We recommend below 10 dBmV. Do you happen to have any cable splitters within the line or does the modem connect directly to the cable outlet? Have all the cables been checked to also ensure there are not hard bends or kinks in the line? Such as the modem being pushed back against a wall and bending the input cable. 

Does the cable also run directly from the network distribution enclosure (house box) directly to the modem/outlet?

From the network distribution box, the cable runs to our basement (through the drop ceiling), and from there, it connects directly to the modem. I am not 100% sure if there are any splitters hidden along the way inside the ceiling, but I can confirm that the final line runs straight into the modem without anything else connected.

Additionally, I noticed that outside, the incoming drop line is being bent and pulled sideways by a tree branch in the front yard. The cable isn’t broken, but it is under tension where it passes through the tree. Could this tree bend and tension on the line be affecting the RF signal levels or causing intermittent issues? If so, would a line adjustment or a maintenance check be necessary?

Please let me know what the next best step would be.

Here's also another image

Thank you so much for the pictures @user_9t9bs9. I would certainly look into scheduling a service appointment. The tree putting tension on the line, especially during windy days, could contribute to possible service issues. I am also not seeing a grounding line in the house box which we would certainly want to address. 

Could you please send a direct message by clicking the chat icon in the upper right corner of the page, clicking on the pen and paper icon, and then entering “Xfinity Support” in the “To” section. Please include your full first/last name and complete service address (Including the city, state, and zip code), and I'll be happy to help.