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Also post the modem's RF signal stats.
Please post the *Downstream Power Level*, the *Upstream Power Level*, and the *SNR* (Signal to Noise Ratio) numbers.
The signal stats are o/k but the error log entries indicate that something is going on. Perhaps there is noise ingress into the line(s) somewhere.
FWIW, there are other signal stat figures that can't be read by the modem. I'm going to try escalating your issue to the Comcast corporate employees that are available to these boards. They will be able to poll the CMTS to see whether or not everything is in the green zone, your node / cable plant and modem health, and also see a history plot for the modem. You should get a reply here in your topic.
Thanks for reaching out and sharing the screenshots you provided. I can take a deeper look into this to see if I'm able to locate a cause for your issues. Can you please verify your first and last name, and the phone number or account number associated with your services in a private message?
To send a private message click on my name "ComcastChe", then click send a message.