CAX80 Ethernet port speeds

Hello,

Issue with download speeds on my CAX80 Cable modem using the ethernet ports, wifi is fine, no issues.

2 Devices on 2 different ports:

TV - on port 4 - 1G. Streaming was hanging and buffering or freezing up. Tested speed 90M on an 800M plan, switched to wifi getting 300M.

Desktop - on multi-gig port. Tested 90 M.

seems like there is something throttling me down to 100M over the wire but I cannot find it. 

Wifi has no issues.

What I have done:

Switched the cables

rebooted the modem

restored to defaults and reconfigured

upgraded the firmware (from V2.1.3.5 to V2.1.3.7)

downgraded the firmware (from V2.1.3.7 to V2.1.2.6)

No luck, I havent called the cable company only because the WiFi is working fine and Im assuming that if it was XFinity it would affect both wired and wireless

Cable Diagnostic

Status: Good

Action: Your setup looks fine. If you are still experience an internet issue, the Netgear Cable Knowledge Base can provide additional troubleshooting info.

Internet Access: Good

Downstream Status: Good

Downstream Power Level: Good

Downstream SNR: Good

Upstream Status: Good

Upstream Power Level: Good

Current time: Sun Apr 17 14:51:37 2022

Startup Procedure
Acquire Downstream Channel: 555 MHz Locked
Connectivity State: OK Operational
Boot State: OK Operational
Security: Enabled BPI+

Downstream Bonded Channels
Channel LockedStatus Modulation ChannelID Frequency Power SNR Correctables Uncorrectables
1 Locked 256 QAM 21 555000000 Hz -5.5 dBmV 41 dB 1 0
2 Locked 256 QAM 13 507000000 Hz -6.7 dBmV 40.2 dB 1 0
3 Locked 256 QAM 14 513000000 Hz -6.4 dBmV 40.3 dB 2 0
4 Locked 256 QAM 15 519000000 Hz -6.1 dBmV 40.6 dB 0 0
5 Locked 256 QAM 16 525000000 Hz -6.2 dBmV 40.6 dB 3 0
6 Locked 256 QAM 17 531000000 Hz -5.6 dBmV 41 dB 3 0
7 Locked 256 QAM 18 537000000 Hz -5.8 dBmV 40.8 dB 0 0
8 Locked 256 QAM 19 543000000 Hz -5.7 dBmV 40.8 dB 2 0
9 Locked 256 QAM 20 549000000 Hz -5.5 dBmV 41 dB 1 0
10 Locked 256 QAM 1 435000000 Hz -7.1 dBmV 39.7 dB 0 0
11 Locked 256 QAM 22 561000000 Hz -5.7 dBmV 40.8 dB 0 0
12 Locked 256 QAM 23 567000000 Hz -5.3 dBmV 41.1 dB 2 0
13 Locked 256 QAM 24 573000000 Hz -5.3 dBmV 41.1 dB 1 0
14 Locked 256 QAM 25 579000000 Hz -5 dBmV 41.1 dB 2 0
15 Locked 256 QAM 26 585000000 Hz -5.2 dBmV 41.1 dB 1 0
16 Locked 256 QAM 27 591000000 Hz -5.1 dBmV 41.2 dB 2 0
17 Locked 256 QAM 28 597000000 Hz -5 dBmV 41.1 dB 3 0
18 Locked 256 QAM 29 603000000 Hz -5.1 dBmV 41.1 dB 0 0
19 Locked 256 QAM 30 609000000 Hz -4.8 dBmV 41.1 dB 2 0
20 Locked 256 QAM 31 615000000 Hz -4.7 dBmV 41.1 dB 3 0
21 Locked 256 QAM 32 621000000 Hz -4.4 dBmV 41.1 dB 4 0
22 Locked 256 QAM 2 441000000 Hz -6.9 dBmV 39.9 dB 1 0
23 Locked 256 QAM 3 447000000 Hz -6.6 dBmV 39.9 dB 1 0
24 Locked 256 QAM 4 453000000 Hz -6.4 dBmV 40.1 dB 1 0
25 Locked 256 QAM 5 459000000 Hz -6.3 dBmV 40.1 dB 0 0
26 Locked 256 QAM 6 465000000 Hz -6.2 dBmV 40.1 dB 0 0
27 Locked 256 QAM 7 471000000 Hz -6.3 dBmV 40.2 dB 0 0
28 Locked 256 QAM 8 477000000 Hz -6.3 dBmV 40.2 dB 1 0
29 Locked 256 QAM 9 483000000 Hz -6.9 dBmV 40 dB 1 0
30 Locked 256 QAM 10 489000000 Hz -7.7 dBmV 39.6 dB 1 0
31 Locked 256 QAM 11 495000000 Hz -7.9 dBmV 39.6 dB 1 0
32 Locked 256 QAM 12 501000000 Hz -7 dBmV 40 dB 2 0

Upstream Bonded Channels
Channel LockedStatus ChannelType ChannelID SymbolRate Frequency Power
1 Locked ATDMA 4 5120 Ksym/sec 29200000 Hz 38.5 dBmV
2 Locked ATDMA 2 5120 Ksym/sec 16400000 Hz 38.0 dBmV
3 Locked ATDMA 3 5120 Ksym/sec 22800000 Hz 38.5 dBmV
4 Locked ATDMA 5 5120 Ksym/sec 35600000 Hz 38.5 dBmV
5 Locked ATDMA 6 2560 Ksym/sec 40400000 Hz 40.0 dBmV
6 Not Locked Unknown 0 0 0 0.0
7 Not Locked Unknown 0 0 0 0.0
8 Not Locked Unknown 0 0 0 0.0

Downstream OFDM Channels
Channel LockedStatus ProfileID ChannelID Frequency Power SNR/MER ActiveSubcarrier Unerror Correctable Uncorrectable
1 Locked 0 ,1 ,2 ,3 159 702000000 Hz 0.28 dBmV 42.5 dB 1126 ~ 2969 115733539 2173364 0
2 Not Locked 0 0 0 Hz 0 dBmV 0 dB 0 ~ 4095 0 0 0

Upstream OFDMA Channels
Channel LockedStatus ProfileID ChannelID Frequency Power
1 Not Locked 0 0 0 Hz 0 dBmV
2 Not Locked 0 0 0 Hz 0 dBmV

Event Log
Time Priority Description
Sun Apr 17 14:13:14 2022 Critical SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=80:cc:9c:6e:49:60;CMTS-MAC=0c:11:67:03:0d:cb;CM-QOS=1.1;CM-VER=3.1;
Sun Apr 17 14:01:03 2022 Notice DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=80:cc:9c:6e:49:60;CMTS-MAC=0c:11:67:03:0d:cb;CM-QOS=1.1;CM-VER=3.1;
Sun Apr 17 14:00:32 2022 Notice TLV-11 - unrecognized OID;CM-MAC=80:cc:9c:6e:49:60;CMTS-MAC=0c:11:67:03:0d:cb;CM-QOS=1.1;CM-VER=3.1;
Thu Jan 1 00:00:53 1970 Notice Honoring MDD; IP provisioning mode = IPv6
Thu Jan 1 00:00:43 1970 Critical SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=80:cc:9c:6e:49:60;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
Thu Jan 1 00:00:50 1970 Critical No Ranging Response received - T3 time-out;CM-MAC=80:cc:9c:6e:49:60;CMTS-MAC=0c:11:67:03:0d:cb;CM-QOS=1.1;CM-VER=3.1;
Thu Jan 1 00:00:43 1970 Critical SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=80:cc:9c:6e:49:60;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
Sun Apr 17 09:01:27 2022 Critical SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=80:cc:9c:6e:49:60;CMTS-MAC=0c:11:67:03:0d:cb;CM-QOS=1.1;CM-VER=3.1;
Thu Jan 1 00:03:04 1970 Critical No Ranging Response received - T3 time-out;CM-MAC=80:cc:9c:6e:49:60;CMTS-MAC=0c:11:67:03:0d:cb;CM-QOS=1.1;CM-VER=3.1;
Thu Jan 1 00:02:48 1970 Critical SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=80:cc:9c:6e:49:60;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
Thu Jan 1 00:00:46 1970 Critical SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=80:cc:9c:6e:49:60;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;

any suggestions?

thanks