Dynamic Range Window & T3 Timeouts

Experiencing intermittent issues multiple times a day where connectivity is interrupted. I'm using a Netgear CM2050V, and each time the issues arise, the event log shows entries like the following:

• RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;
• Dynamic Range Window violation
• CM-STATUS message sent. Event Type Code: 16; Chan ID: 25;
• Started Unicast Maintenance Ranging - No Response received - T3 time-out

Anecdotally, it usually seems to happen around certain times of day (mid-morning), but can happen anytime. I often know that it's about to happen, because I'll be able to hear people on a work call but they can't hear me anymore (i.e. my upload has died).

The power levels and SNR levels are all within spec, and a technician verified that the levels looked fine on his tool. Most times, my connection is fine & quite fast. That said, the technician did specify that if the issues persisted, there were some logging steps that could be taken by the Xfinity CMTS team to examine stability on the ISP side over several days.

From some searching on these forums and other places, it appears that similar issues have been resolved for other customers by replacing lines/equipment between Xfinity and the house. I looked for the button to send a Direct Message, but I'm not sure if that option is still available.