85142 - The Internet is always hanging and then connecting again. I consistently see Uncorrectable Errors.

85142 - The Internet is always hanging and then connecting again.  I consistently see Uncorrectable Errors on Channels 1,6,7,8, and 9 with Arris SB6183 16-channel modem.  I confirmed outside connections are solid where we have an Antronix 4-way 5-1002Mhz splitter with four -7dB out connections. We also have a MoCA POE-F201C filter for the incoming line. No major issues until a recent Cox Outage and now constant issues. Any recommendations?