CM1100 (Xfinity) downstream light flashing yet connected?

I recently moved back into my home office for work and have noticed something odd that I'd seen months back but never paid attention to. I now suspect that it's been going on for several months now regularly, as I've noticed weird recurring hiccups in streaming services where it has to pause and spins for like 10 secs then resumes (and seems to happen on nearly the same schedule).

The downstream light on my Netgear CM1100 modem flashes on a recurring basis every 5-30 mins, yet I'll remain connected though with a rougher connection (packet drops, slow responses, etc).

I'm fairly certain that the modem itself is fine, but I've got some captured info from the logs as well as the status page. Can anyone please take a look and let me know what you may see wrong? Comcast's position so far on a tech support call is that there's nothing wrong, but I contend there's a signal issue and not with the modem, and I'm pretty sure all they did was their normal "let me press this button and if it says good then it must be good."

Here is the recurring set of warnings/errors. Whenever this happens, Critical status gets reached in the Log. Typically the light stops flashing after a few mins, but again -- I'm still connected, but things seems slow to respond for a short bit. I also noticed that channels 32 and 193 seem to keep popping up in these recurring sets of messages

Here's a log sample and status pages. This log pattern I'm showing basically repeats itself over and over anywhere from every 5 mins to max of 30 mins. Any help would be appreciated. If there's an issue, I need to help explain to Xfinity what is wrong so they dont try to keep insisting things are fine.

Thanks!