Persistent T3 timeouts while trying to range on upstream channel 3

Have been experiencing constant 3-10% packet loss for several months from wireless, and tried to switch to a MoCA adapter, to see if it was just router issues. Packet loss remained constant, which prompted a test with ethernet and router logs. Here are the modem's signal stats and log files, as well as the results of wired testing: 

Signal Stats

Log File

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