Started Unicast Maintenance Ranging - No Response received - T3 time-out

I have seen a number of posts on this forum with this same problem, and my experience is identical to the details listed elsewhere. My issue seems to be a recurring "Started Unicast Maintenance Ranging - No Response received - T3 time-out" message found in my modem's event logs.

The details: I have a Netgear CM1100 and my connection will drop multiple times a day, usually resolved within 10 minutes or so after power cycling the modem, but sometimes I have to power cycle it multiple times for the connection to re-establish. Per this article my device is activated, I've checked and secured the connections, and I checked the power levels of the cable line and they're all within acceptable ranges.

Some of the stats mentioned in other posts about this problem, such as SNR, also appear to be within acceptable ranges. Would I need an appointment to get this fixed, or is there something else going on? I have some screenshots of the error logs and I'm happy to provide other stats as well.