SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing

I am having exactly the same issue that user_kdseatac2021 had six months ago. As suggested in that post by a customer expert, I'm starting a new topic.

I have a Motorola MB8611 and the modem randomly and several times a day will drop the connection to the Xfinity network. The logs show an error of

SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing

Sometimes, after about ten minutes, the modem will reacquire the connections, and sometimes I have to power off the modem to get it to sync. This has been getting worse over the past several months and started while I had a different modem so I don't think it's related to the modem I'm using.