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Inconsistent speeds on Gigabit - Jacksonville FL

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Inconsistent speeds on Gigabit - Jacksonville FL

To knock out the basic stuff first.

- On a gaming PC with NVMe SSD, gigabit ethernet adapter, plenty of disk space, ram, processing power, etc.
- Hardwired to the provided Gateway with Cat 5E.
- Computer is capable of near-gigabit speeds, evidence provided in screenshots.

We signed up for gigabit service appproximately 3 weeks ago and it has been up and down. I called in and spoke with a tech that checked my signal levels on my modem, who described them as a "roller coaster that you would not want to get on". The phone tech says we need a service visit.

We get someone sent out to the house, he runs his tests, says the signal levels are fine, smooth as glass. This isn't adding up. He has me run a speedtest of Ookla. It gets 930-something while the tech is there, to a Comcast-provided Ookla server. Cool. Tech leaves, almost leaving his equipment bag (had to run it out to his truck so he wouldn't forget it!) having done nothing relevant to fix anything. (Which is funny because I got a billing for $70 for a failed SIK. You can bet I'll be disputing that! Edit: Dispute for the $70 was successful, after spending 2 hours on the phone with the out of country call center. Great use of my time that was. )

On Steam, my download speeds are hot garbage, max 240Mbit/s if I'm lucky, regardless of the CDN server that I pick. My streaming boxes buffer from time to time, regardless of correct wifi networks picked (I don't have a large house, signal is near-perfect), and sometimes on YouTube I get suggested 720p instead of 1080p for videos that support it. Something is going on, but I can't seem to get the help I need to fix it. 

For fun I also ran some testmy.net speed tests that were consistency-based rather than a quick burst like Ookla. That looks even worse for "Gigabit". 

Is there a bad node near Jacksonville that is causing problems? Is it our neighborhood? What's the deal?

Tried adding photos on site. The photo upload tool is broken. Irony. Here are the screenshots. https://imgur.com/a/EkGkVL6

 

Edit: Statistics updated 1-15 9:20 PM

Index 2 1 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 32 33 34 35 37  
Lock Status Locked Locked Locked Locked Locked Locked Locked Locked Locked Locked Locked Locked Locked Locked Locked Locked Locked Locked Locked Locked Locked Locked Locked Locked Locked Locked Locked Locked Locked Locked Locked Locked Locked
Frequency 489 MHz 483 MHz 495 MHz 501 MHz 507 MHz 513 MHz 519 MHz 525 MHz 531 MHz 537 MHz 543 MHz 549 MHz 555 MHz 561 MHz 567 MHz 573 MHz 579 MHz 585 MHz 591 MHz 597 MHz 603 MHz 609 MHz 615 MHz 621 MHz 627 MHz 633 MHz 639 MHz 459 MHz 465 MHz 471 MHz 477 MHz 690 MHz 611600000
SNR 41.8 dB 41.7 dB 41.7 dB 41.4 dB 41.3 dB 41.3 dB 41.4 dB 41.5 dB 41.4 dB 41.4 dB 41.3 dB 41.4 dB 41.1 dB 41.0 dB 40.9 dB 40.9 dB 41.0 dB 40.8 dB 40.8 dB 40.7 dB 40.6 dB 40.7 dB 40.6 dB 40.4 dB 40.4 dB 40.2 dB 40.2 dB 41.8 dB 41.8 dB 41.7 dB 41.7 dB 39.3 dB NA
Power Level 4.1 dBmV 4.1 dBmV 4.1 dBmV 4.1 dBmV 4.1 dBmV 4.0 dBmV 4.2 dBmV 4.4 dBmV 4.4 dBmV 4.3 dBmV 4.4 dBmV 4.4 dBmV 4.4 dBmV 4.4 dBmV 4.5 dBmV 4.4 dBmV 4.7 dBmV 4.7 dBmV 4.9 dBmV 4.8 dBmV 4.8 dBmV 4.8 dBmV 4.7 dBmV 4.5 dBmV 4.6 dBmV 4.5 dBmV 4.6 dBmV 4.3 dBmV 4.3 dBmV 4.2 dBmV 4.2 dBmV 4.8 dBmV NA
Modulation 256 QAM 256 QAM 256 QAM 256 QAM 256 QAM 256 QAM 256 QAM 256 QAM 256 QAM 256 QAM 256 QAM 256 QAM 256 QAM 256 QAM 256 QAM 256 QAM 256 QAM 256 QAM 256 QAM 256 QAM 256 QAM 256 QAM 256 QAM 256 QAM 256 QAM 256 QAM 256 QAM 256 QAM 256 QAM 256 QAM 256 QAM OFDM OFDM
                                                                   
Upstream Channel Bonding Value                                                        
Index 1 2 3 4                                                          
Lock Status Locked Locked Locked Locked                                                          
Frequency 35 MHz 29 MHz 23 MHz 16 MHz                                                          
Symbol Rate 5120 5120 5120 5120                                                          
Power Level 38.8 dBmV 38.8 dBmV 38.3 dBmV 37.8 dBmV                                                          
Modulation QAM QAM QAM QAM                                                          
Channel Type ATDMA ATDMA ATDMA ATDMA                                                          
                                                                   
CM Error Codewords  
Index 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32  
Unerrored Codewords 2742848917 3355545751 3355550351 3355554443 3355556260 3355572923 3355574479 3355586033 3355628985 3355643035 3355642931 3355637424 3355660730 3355646225 3355653355 3355659151 3355274118 3355267435 3355257896 3355270731 3355306716 3355323825 3355340257 3355333447 3355368829 3355368758 3355380942 3355410523 3355345146 3355361316 3355410486 2742848917  
Correctable Codewords 652190743 264 255 276 270 260 279 269 267 253 266 275 259 277 271 263 265 255 225 231 271 285 246 286 265 260 238 265 243 214 243 652190743  
Uncorrectable Codewords 0 1297 1308 1303 1292 1319 1303 1309 1305 1350 1326 1287 1322 1287 1294 1324 1327 1321 1138 1127 1317 1327 1368 1332 1342 1357 1383 1296 1112 1151 1315 0  



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Re: Inconsistent speeds on Gigabit - Jacksonville FL

https://forums.xfinity.com/t5/Your-Home-Network/Troubleshooting-Gigabit-internet-speeds/m-p/3145413#...


I am not a Comcast Employee.
I am just a customer, volunteering my time to help other customers here in the Forums.
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Regular Visitor

Re: Inconsistent speeds on Gigabit - Jacksonville FL


@RobertWy wrote:

https://forums.xfinity.com/t5/Your-Home-Network/Troubleshooting-Gigabit-internet-speeds/m-p/3145413#...


10) Ask for help on the forums.

  • The community will often be able to offer you sage advice.
  • An employee can check your modem/node health and review current and historical reports related to your modem. 


Yes. This is the step I am on. I have done all the preceeding.