Hi, I am having an issue with my CAX80 modem/router. Ever upgrading to this from my C7000 my Samsung TV’s no longer want to stream well and I can’t get their “TVPlus” to work anymore. All things seem to point to extremely slow speeds as these things will work fine sometimes. Things I have tried:

Both wired and wireless connected TV
Reset TV, unplugged power, ran troubleshooters
Checked for updates for both router and TV (V2.1.1.4)
This is my second CAX80 after the first one failed, so I doubt its hardware related
Test speed from the Nighthawk app: 457Mbps Down, 27Mbps Up
Using 8.8.8.8 nameservers for both router and tv.
Disabled port scan and DOS firewall on router

I’m running out of ideas to fix this and considering selling this to get a non-Netgear product. Every Netgear product has some sort of issue like this and their lousy 90 day support is useless.

Time	Priority	Description
Tue Dec 22 13:27:25 2020	Notice (6)	DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2.;CM-MAC=08:36:c9:a1:1f:d8;CMTS-MAC=00:01:5c:71:f4:64;CM-QOS=1.1;CM-VER=3.1;
Tue Dec 22 13:26:54 2020	Notice (6)	TLV-11 - unrecognized OID;CM-MAC=08:36:c9:a1:1f:d8;CMTS-MAC=00:01:5c:71:f4:64;CM-QOS=1.1;CM-VER=3.1;
Tue Dec 22 13:26:50 2020	Error (4)	Missing BP Configuration Setting TLV Type: 17.9;CM-MAC=08:36:c9:a1:1f:d8;CMTS-MAC=00:01:5c:71:f4:64;CM-QOS=1.1;CM-VER=3.1;
Tue Dec 22 13:26:50 2020	Error (4)	Missing BP Configuration Setting TLV Type: 17.8;CM-MAC=08:36:c9:a1:1f:d8;CMTS-MAC=00:01:5c:71:f4:64;CM-QOS=1.1;CM-VER=3.1;
Tue Dec 22 13:26:50 2020	Error (4)	Missing BP Configuration Setting TLV Type: 17.3;CM-MAC=08:36:c9:a1:1f:d8;CMTS-MAC=00:01:5c:71:f4:64;CM-QOS=1.1;CM-VER=3.1;
Tue Dec 22 13:26:50 2020	Warning (5)	DHCP WARNING - Non-critical field invalid in response ;CM-MAC=08:36:c9:a1:1f:d8;CMTS-MAC=00:01:5c:71:f4:64;CM-QOS=1.1;CM-VER=3.1;
Thu Jan 1 00:00:54 1970	Notice (6)	Overriding MDD IP initialization parameters; IP provisioning mode = IPv4
Thu Jan 1 00:00:47 1970	Critical (3)	No Ranging Response received - T3 time-out;CM-MAC=08:36:c9:a1:1f:d8;CMTS-MAC=00:01:5c:71:f4:64;CM-QOS=1.1;CM-VER=3.1;
Thu Jan 1 00:00:44 1970	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=08:36:c9:a1:1f:d8;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
Thu Jan 1 00:00:49 1970	Critical (3)	No Ranging Response received - T3 time-out;CM-MAC=08:36:c9:a1:1f:d8;CMTS-MAC=00:01:5c:71:f4:64;CM-QOS=1.1;CM-VER=3.1;
Thu Jan 1 00:00:44 1970	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=08:36:c9:a1:1f:d8;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
Thu Jan 1 00:01:10 1970	Critical (3)	No Ranging Response received - T3 time-out;CM-MAC=08:36:c9:a1:1f:d8;CMTS-MAC=00:01:5c:71:f4:64;CM-QOS=1.1;CM-VER=3.1;
Thu Jan 1 00:01:04 1970	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=08:36:c9:a1:1f:d8;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
Thu Jan 1 00:00:48 1970	Critical (3)	No Ranging Response received - T3 time-out;CM-MAC=08:36:c9:a1:1f:d8;CMTS-MAC=00:01:5c:71:f4:64;CM-QOS=1.1;CM-VER=3.1;

Forum Discussion

CAX80 and Samsung TV Issues