Are you going through a amplifier? Your signal levels are high for some channels but really low SNR. Do you live in a apartment? Also, just because it wasn't happening a month ago, doesn't mean it's NOT a inside wiring issue. Things break.
It's a Zoom, they cannot handle signals that are hot or long, Arris can.
Is there any technical reason why? Doesn't DOCSIS have to work the same for all devices approved for the standard? What's missing on the Zoom?
I cannot answer that other than it's always been a device that's not nearly as good as others. Whether it's components that are more cheaply made/assembled, or programming that's not nearly as good, I cannot tell you. What I CAN tell you is. it's not a device i would EVER recommend to anyone!. You can look ALL over the forums here and other cable providers and see that the ZOOM and MB86xx series has problems.
THAT, and people still believe it's Motorola! It's dishonest, underhanded, sneaky, and downright fraudulent!
I live in a house. How do you actually check to see if it's an amplifier issue? I have a gray box on the side of my home that I believe is the "communications" or coax lines coming into my house from the pole in my alley for the internet,phone etc. But the gray box has a small lock on it, that I'm assuming is there from cox themselves if they ever need to check it.
Just another example too, I was having connection drops this morning til about noon (8/19/23) I checked Cox's outage map on their website, saw there was actual outage about block or 2 over from me (on there map) affecting about 1-50 customers till about 12:30pm my time, then in less then 5 mins after I was just watching the map screen, I had to refresh my browser since another connection drop, BOOM outage no longer there. But about 15 mins later, connection drops for the next 3-5 hours. Visit the cox outage map and no reported outages anymore from them in my area even though the drops persisted.
Also to Darkatt, I read about all the 2.5Gbps modems out there for DOCSIS 3.1 and the whole OFDMA upstream bonded channel issues on Cox. Between Netgear, Motorola and Arris it sounds like they're all garbage tier. I had a new Arris S33v2 before the Motorola SB8611 I have now. That Arris S33v2 has overheating issues and bad firmware from alot of users on Reddit and Amazon customer reviews. Granted I didn't know this before I bought it (my bad on that one)
Before I switched to Gigablast back in early June, I was using a Arris SB8200 I got back in August 2020, when I switched to Cox's 500/20 plan. Ever since upgrading to Gigablast, the service is just unreliable, and the 2.5Gbps modem's along with their software has been just trash.
The Arris S33v2 and this Motorola SB8611 have only given me the full bandwidth I'm paying for when direct connecting to my PC. The full overprovisioned 1200 downstream and 35 upstream. Problem is the modem will eventually disconnect and drop after a few hours use. Then it's back to reseting and reboot in the hopes of a stable constant connection.
I currently run a Netgear CM2000, runs steady without issues.
The fact that connecting your PC directly gives you full speed indicates the issue is with the router and/or it's settings, and not the modem. If the modem gives full speed to the device plugged into it, and you don't get it through the router, that should tell you something. I upgraded my router to a RAXE300 .
I have preferred internet -
Tested through the router -
So you have TV and Telephone service? Do you happen to know how the coaxial gets from the street to the different outlets in your house? Is it split all in the grey box? If so, you need a technician to unlock the box. When they do unlock it, ask them to leave it unlocked incase you need to change/repair anything. Everything past the demarc(where it grounds) is your wiring.
BTW, Are you having problems with Telephone or TV service too?
