Not applicable

Inconsistent upload speeds

For the past two months, my upstream has rarely been stable at the rated speeds I'm paying for and I keep having T3 timeouts. When the problem started, I had the 50 down/ 5 up package but was averaging 65 down/ 2 up. The upload would randomly drop to nothing and would require rebooting the modem and router before it would start working again. This would happen multiple times a day, more often in the evening. From what I read at the time, all my snr and power levels were good for the sb6141 that I was using at the time. I finally had a tech come out on the 12th and he replaced the drop, removed the trap he found, and replaced the connectors inside the house. Apparently the trap was limiting me to 4 downstream channels. The tech told me that they were doing maintenance in the area trying to trace down packet loss so he couldn't do anymore until they finished but he thought I was good to go. After a few hours everything came up and it all seemed good. A few days later I started having issues again but not as often. I replaced the sb6141 with a netgear cm600 just in case it was the modem and upgraded my package to the 200/20 which i was planning on doing when the issue was resolved. It seemed to remedy the problem but after a week it came back. Yesterday I couldn't get over 3mb up and today it's 4. I have no splitters, connections are tight, I watched the tech replace the ends so I know they're good. They're sending another tech out in the morning with a supervisor. Is there anything I should ask or know?


1. San Antonio, Tx, 78227 Single home

2. Internet only 200 down 20 up

3. Netgear CM600

4. TP-Link Archer C7

5. FW V1.01.05

6. No green dot on TWC page. Mac is correct but it has the mac duplicated in the S/N slot as well.

7. Purchased 200/20. Twc speedtest is 235.14 down, 3.14 up, 22ms latency, 5ms Jitter

8. Switched from wireless ac to a cat6 hardwire immediately after symptoms started 2 months ago.

9.  Signals: Event log:

10. Drop from pole in alley to grounding block, RG6 from block to modem. Looks like cat5 to router, cat6 to my pc.

11. There's a cat5 from router to another pc, and a few wireless devices.

12. Changed from SB6141 to CM600 and upgraded from 50/5 to 200/20.

13. It's not one particular site so I ran it on Disney and ESPN.

14. Not noticeable when watching netflix unless the upload drops to 0. When gaming, it makes it unbearable sometimes.

15. No background processes utilizing network that I can see on resource monitor.



Re: Inconsistent upload speeds

I wish I'd seen the pre trap removal 6141 level page...


You have way too many correctables/uncorrectables and will never attain a speed over 40-80 megs with that much correction.


Re: Inconsistent upload speeds

Welcome to the Austin filter issue at it's ugliest... you have 3-5x the uncorrectables than correctables, that modem doesn't show the total unerrored bytes.

 There should NEVER be more uncorrectables, they stop your down and uploads, your computer must renegotiate from the last good packet all the way back to the originating server, that can be a 2-15 second delay.

This can also be any one of your devices tying up your entire lan side, It's wht you shouldn't use wireless for any streaming video devices, they too add to the delays and jumps in latency and resulting speed loss.

 You can also disable IPv6, Cloud, sync, onedrive and that awfull Win 10 peer to peer upgrader that microsoft illegally added to win 10 updates without anyones knowledge. They're using customers computers as update servers for other customers when it was only supposed to be your own lan devices.

You need to get TWC back out if those correcteds and uncorrecteds keeep rising.

 There also appears to be a couple channels with local broadcast TV ingress, Could be anywhere  from your modem to wherever the HFC fiber to coax c=onverter , maybe a mile or 2 away..

 Usual causes are too many open splitter ports, coax off to open wall plates, corroded grounding blocks, broken hardline and loose amp & tapoff covers on the streets

Not applicable

Re: Inconsistent upload speeds

With the 6141, I was having to reset it so much there wouldn't have been enough uptime to be useful. My download speed is consistently 200+, but my upload after the first week has been 5 or below. At the moment it's at 4.5 but this morning was averaging 1.3.  My WAN on my router is in IPV6, should I switch that to v4? There will be a tech here in the morning so hopefully they can get it figured out this time.


Re: Inconsistent upload speeds

I doubt it's an IPv6 issue completely.

If you have multiple devices, it could be.  TWC speeds falter when dvices are trying to run 1pv$ v6 simultaneously.


 But more than likely a device is running cloud, sync, onedrive, dropbox or the Win 10 peer to peer upgrader.


Not applicable

Re: Inconsistent upload speeds

The tech is elevating the issue for someone to come out and check the node. He tested our line and even hooked up his own modem run straight to his handheld and was seeing the same speeds and signal.  I asked him about the t3 errors that keep popping up in the event log and he said he didn't know what that was.