Internet upload speed dropping.
My internet upload speeds are usually 20Mbps. But around 5-10pm they "magically" seem to be dip down to less than 1Mbps before going back to normal. Even during the day my download and upload speeds ...
Forum Discussion
I'm using a new Netgear CM500 modem and R6700AXS router. They're both new items bought after the problem started. The problem only seems to show up around 5-10ish pm. It can sometimes extend to even 11pm. I've never noticed any other time frame that I get really bad issues with the internet but I can't say I've been home during the day to notice it. I've even plugged in my laptop straight to the modem and still get the same issue with my internet.
You bought a modem recently and it's only DOCSIS 3.0? DOCSIS 3.1 is the standard these days and there is talk of some areas moving to DOCSIS 4.0 soon. Heck, DOCSIS 5.0 is even in the works in the labs. What DOCSIS 3.1 gets you is OFDM and OFDMA channels. OFDMA specifically gets you more upstream bandwidth, which helps with upload speed congestion. On top of a lack of OFDMA, the CM500 is a older DOCSIS 3.0 modem, with only 4 QAM upstream channels. This further limits bandwidth. Not saying that is what is causing the problem, but it doesn't help.
Can you post your signal levels from 192.168.100.1? Specially the upstream levels. See here for more info. Also, how does the coax get from the pole/street to the room the modem is in? Any splitters/amp/filters?
Last, were you getting slow speeds when the technician was out, direct to the modem? If so, what did they say was the reason?
I'm assuming you mean upstream bonded channels? I can get a new modem but i chose this one cause it was all that i really needed for my speeds. As for the coax leading from the street to the house I have no idea. I know there's a box on the side of my house when the tech came out and worked on it. It leads into the underside of the house down into the basement furnace room. I was not getting the slow speeds when the technician came out. He put an extra item connecting on the connecting portion saying it would help with noise from my neighbor I think?
So he detected noise from your neighbor and didn't do anything to fix that? Instead he tried to filter it out? That is bad troubleshooting. I suggest having another technician out to investigate that. Trying to schedule it for after 5PM. Your power levels are right on the money but there must be noise/ingress because you are having T3/T4 time out errors. Do you only see the errors during 5-10PM? The ones shown in the screenshot are around 3AM. Also, do you see them on the new modem?
I also saw that I was getting these messages
The internet speeds just dropped for me
AsianInvasion
Thanks for joining our community forums! Welcome to our community.
I tried to locate your account using your forums credentials so I could review your modem's connection to our network, but the email you used to register for our forums doesn't seem to be tied to your account. While the minimum supported DOCSIS version depends on your Cox Internet package, we recommend using a DOCSIS 3.1 modem or gateway for an optimal internet experience. Please reference the currently supported devices at https://www.cox.com/residential/support/cox-certified-cable-modems.html. Should you opt to choose a different device. (Changing to a DOCSIS 3.1 modem is not a guarantee for a resolution, but it does future-proof you somewhat when it comes to any speed increases we may push out, and 3.1 modems offer more efficient performance that the 3.0 counterparts.)
Given your experience when contacting support so far, I understand if you'd like to continue to troubleshoot with our community members. Please keep in mind that some issues will beyond the scope of support available from our users. If you need additional assistance once you have exhausted troubleshooting on your end please send us an email containing your full name, complete street address, detailed description of the issue and a link to your forum post to cox.help@cox.com. If you prefer, you can also reach our forums moderators via social media on Facebook, Twitter or Instagram.
