Orbi WiFi 7 RBE973
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C7800 - Speed Tests All Over The Place - WOW Communications

CoryPC81
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C7800 - Speed Tests All Over The Place - WOW Communications

I have noticed connection issues for quite some time.  We had a hurricane and our area was rebuilt from the ground up.  I also had them run a line from the pole to the side of my townhome, underneath the sidewalk, and they drilled a hole into my living room and ran the line direct to the modem.  After having issues for some time they came out and put a splitter before the Nighthawk, which helped slightly.  

 

Everything gradually got better over time until this past Saturday - we have tanked again.

Hulu/Youtube/Netflix all buffering

ISP: Wow Communications

Plan: 1Gig

 

Speed Tests vary so much I don't know what to believe.

fast.com - 82mbps

speedtest.net - 43mbps

wowway.speedtestcustom.com - 742mbps

speedof.me - 2.98mbps

google fiber speed test - 98.9mbps

 

So WOW says it's not their problem because their website's speedtest is most accurate.  

 

The Eero system they provide normally shows 880mbps and when the issue started it was reporting 110mbps.  This morning it went back up to 600mbps and seems to be getting slightly better.  WOW is blaming the modem/router and says there is nothing wrong.  

 

I work from home and we have a speed test calculator that is very accurate.  It is reporting 22mbps for my machine.  When on my work VPN it tanks to 3mbps, which is not enough for me to function.  

 

Here is my event log from when I noticed the issue until today - prior to this there is nothing for a week, and I did have some issues last week:

TimePriorityDescription
2020-12-14, 13:37:39Warning (5)Dynamic Range Window violation
2020-12-13, 21:43:53Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=08:36:c9:ce:c4:b8;CMTS-MAC=00:01:5c:7b:5c:4f;CM-QOS=1.1;CM-VER=3.1;
2020-12-13, 21:43:50Notice (6)TLV-11 - unrecognized OID;CM-MAC=08:36:c9:ce:c4:b8;CMTS-MAC=00:01:5c:7b:5c:4f;CM-QOS=1.1;CM-VER=3.1;
Time Not EstablishedWarning (5)ToD request sent- No Response received;CM-MAC=08:36:c9:ce:c4:b8;CMTS-MAC=00:01:5c:7b:5c:4f;CM-QOS=1.1;CM-VER=3.1;
Time Not EstablishedWarning (5)DHCP WARNING - Non-critical field invalid in response ;CM-MAC=08:36:c9:ce:c4:b8;CMTS-MAC=00:01:5c:7b:5c:4f;CM-QOS=1.1;CM-VER=3.1;
Time Not EstablishedCritical (3)DHCP FAILED - Discover sent, no offer received;CM-MAC=08:36:c9:ce:c4:b8;CMTS-MAC=00:01:5c:7b:5c:4f;CM-QOS=1.1;CM-VER=3.1;
Time Not EstablishedNotice (6)Honoring MDD; IP provisioning mode = IPv4
Time Not EstablishedCritical (3)No Ranging Response received - T3 time-out;CM-MAC=08:36:c9:ce:c4:b8;CMTS-MAC=00:01:5c:7b:5c:4f;CM-QOS=1.1;CM-VER=3.1;
Time Not EstablishedCritical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=08:36:c9:ce:c4:b8;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
2020-12-12, 17:43:49Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=08:36:c9:ce:c4:b8;CMTS-MAC=00:01:5c:7b:5c:4f;CM-QOS=1.1;CM-VER=3.1;
Time Not EstablishedCritical (3)No Ranging Response received - T3 time-out;CM-MAC=08:36:c9:ce:c4:b8;CMTS-MAC=00:01:5c:7b:5c:4f;CM-QOS=1.1;CM-VER=3.1;
Time Not EstablishedCritical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=08:36:c9:ce:c4:b8;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
2020-12-12, 17:42:48Critical (3)Resetting the cable modem due to docsDevResetNow
2020-12-12, 17:36:53Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=08:36:c9:ce:c4:b8;CMTS-MAC=00:01:5c:7b:5c:4f;CM-QOS=1.1;CM-VER=3.1;
Time Not EstablishedCritical (3)

SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=08:36:c9:ce:c4:b8;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;

 

 

Model: C7800|Nighthawk X4S-AC3200 WiFi Cable Modem Router
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