Motorola MB8611 Frequent Reboots

I have been using my own supplied Motorola MB8611 modem for quite some time now with zero issues. This week, it has started rebooting frequently, and the signal levels and SNR for the OFDM PLC channels seem out of spec.

There are also an enormous of corrected and uncorrected errors for this channel. I have attached an image for reference. The image is taken after 4 hours of uptime

This seems to have coincided almost perfectly with a massive amount of tree work that occurred up the line from me. A technician visited 6 months ago for the same issue, and ran a new line from the street and into the house, so I am fairly confident that the drop from the street is not the issue.

Any assistance is welcome.