I tried to search through the forum to prevent posting previously covered topics. None of the previously discussed posts seemed identical to my issue. I have been having intermittent packet loss for several months. I bought the current modem 6 months ago. I seem to have terrible luck with modems as I have to replace them every 12-16 months. I can go hours, if not longer, without packet loss, but when it hits it hits hard. The episodes of packet loss usually occur for about 20-30 seconds with having episodes for about 20-30 minutes then they happen. I did rent a modem from Cox to help troubleshoot the issue. I interestingly had the same issue shortly after activating the modem. This did resolve after the initial episode having 36 hours of running with only 3 lost packets. I am not sure if this means that my modem is not functioning properly or if Cox is giving connectivity preference to users using their rented equipment (if this is even possible.) I ping the modem at the same time that I am pinging Google. I do not have any packet loss pinging the modem when I have the loss pinging Google. I attached a picture of what the packet loss looks like. The picture of the packet loss is when the Cox modem was connected. The packet loss has the same general look when I have the CM500 modem attached. I also posted the modem event log as well. The computer doing the "diagonsing" is hard-wired. The packet loss occurs across all devices. The modem is connected to a Linksys EA7300, but the issue occurs when only having my computer connected to the modem.

Thanks for your time.

Time	Priority	Description
2020-9-13, 22:08:50	Critical (3)	Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=bc:a5:11:71:d0:ac;CMTS-MAC=00:38:df:9b:db:24;CM-QOS=1.1;CM-VER=3.0;
2020-9-13, 22:08:05	Critical (3)	REG RSP not received;CM-MAC=bc:a5:11:71:d0:ac;CMTS-MAC=00:38:df:9b:db:24;CM-QOS=1.1;CM-VER=3.0;
2020-9-13, 22:08:02	Notice (6)	TLV-11 - unrecognized OID;CM-MAC=bc:a5:11:71:d0:ac;CMTS-MAC=00:38:df:9b:db:24;CM-QOS=1.1;CM-VER=3.0;
1970-1-1, 00:00:34	Warning (5)	DHCP WARNING - Non-critical field invalid in response ;CM-MAC=bc:a5:11:71:d0:ac;CMTS-MAC=00:38:df:9b:db:24;CM-QOS=1.0;CM-VER=3.0;
1970-1-1, 00:00:32	Notice (6)	Honoring MDD; IP provisioning mode = IPv4
1970-1-1, 00:00:22	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=bc:a5:11:71:d0:ac;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2020-9-13, 21:51:57	Critical (3)	REG RSP not received;CM-MAC=bc:a5:11:71:d0:ac;CMTS-MAC=00:38:df:9b:db:24;CM-QOS=1.1;CM-VER=3.0;
1970-1-1, 00:00:21	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=bc:a5:11:71:d0:ac;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2020-9-13, 21:44:00	Critical (3)	Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=bc:a5:11:71:d0:ac;CMTS-MAC=00:38:df:9b:db:24;CM-QOS=1.1;CM-VER=3.0;
2020-9-13, 21:43:15	Critical (3)	REG RSP not received;CM-MAC=bc:a5:11:71:d0:ac;CMTS-MAC=00:38:df:9b:db:24;CM-QOS=1.1;CM-VER=3.0;
1970-1-1, 00:00:28	Critical (3)	No Ranging Response received - T3 time-out;CM-MAC=bc:a5:11:71:d0:ac;CMTS-MAC=00:38:df:9b:db:24;CM-QOS=1.0;CM-VER=3.0;
1970-1-1, 00:00:22	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=bc:a5:11:71:d0:ac;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2020-9-13, 21:41:58	Critical (3)	Resetting the cable modem due to docsDevResetNow
2020-9-13, 21:28:22	Critical (3)	No Ranging Response received - T3 time-out;CM-MAC=bc:a5:11:71:d0:ac;CMTS-MAC=00:38:df:9b:db:24;CM-QOS=1.1;CM-VER=3.0;

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Intermittent packet loss