Over the past few weeks I've been experiencing intermittent packet loss or high latency when receiving packets. As a result, in games I get micro stutters and sometimes slingshot. Streaming videos is consistent from my experience. I only use LAN connections with CAT6 cables in all of these tests.
Below are some attached pictures of my pings to Google and modem reports downstream/upstream levels.
Here are some of the steps I have tested:
- While issue is occurring, I pinged my modem, router, and Google DNS. I get pack drops or high latency on Google DNS, about every 10th packet, but no issues at the router/modem level. This lead me to believe that the issue is somewhere on Comcast's side.
- Checked power levels and I believe my upstream power is low.
- Tested three different coax cable plugs in my house. All have the same issue.
- Removed splitter from Comcast box. Now only one line feeding into the house. Tested power levels again and the upstream power is still low but the downstream power improved (see screenshot attached).
- Called Comcast technician out to test line. They did all of their remote resets and then sent a technician out. They said that the cabling in my house may be the problem because people typically build houses on the cheap for the coax lines. They redid all the connections at the box at the road, box at my house, and cable plugging into my wall. They also tested the grounding cable.
- After the technician left, I looked at the cable in the wall and compared it to my own coax cables. It seemed less thick than mine and lower quality. I went into the attic to see if I could replace it but it seems like it will be near impossible to do myself.
Before I go through the trouble of replacing all the cabling in my house or hiring someone to do it. Are there any suggestions for other steps I can take for troubleshooting this issue? Should I continue to hound Comcast?
Below is a copy and paste of whats in the image:
Downstream Bonded Channels Channel Lock Status Modulation Channel ID Frequency Power SNR Correctables UnCorrectables 1 Locked QAM 256 1 483000000 Hz 5.5 dBmV 40.9 dB 0 0 2 Locked QAM 256 2 489000000 Hz 5.4 dBmV 40.9 dB 0 0 3 Locked QAM 256 3 495000000 Hz 5.1 dBmV 40.3 dB 10 0 4 Locked QAM 256 4 507000000 Hz 5.0 dBmV 40.9 dB 0 0 5 Locked QAM 256 5 513000000 Hz 5.1 dBmV 40.3 dB 0 0 6 Locked QAM 256 6 519000000 Hz 5.0 dBmV 40.9 dB 0 0 7 Locked QAM 256 7 525000000 Hz 5.0 dBmV 40.3 dB 7 1 8 Locked QAM 256 8 531000000 Hz 5.0 dBmV 40.9 dB 101 0 9 Locked QAM 256 9 543000000 Hz 4.6 dBmV 40.3 dB 9 0 10 Locked QAM 256 10 549000000 Hz 4.4 dBmV 40.3 dB 0 0 11 Locked QAM 256 11 555000000 Hz 4.3 dBmV 40.3 dB 0 0 12 Locked QAM 256 12 561000000 Hz 4.4 dBmV 40.3 dB 0 0 13 Locked QAM 256 13 567000000 Hz 4.4 dBmV 40.9 dB 0 0 14 Locked QAM 256 14 573000000 Hz 4.4 dBmV 40.3 dB 0 0 15 Locked QAM 256 15 579000000 Hz 4.3 dBmV 40.9 dB 0 0 16 Locked QAM 256 16 585000000 Hz 4.0 dBmV 40.3 dB 0 0 17 Locked QAM 256 17 591000000 Hz 3.7 dBmV 40.3 dB 3 0 18 Locked QAM 256 18 597000000 Hz 3.4 dBmV 40.9 dB 0 0 19 Locked QAM 256 19 603000000 Hz 3.2 dBmV 40.3 dB 0 0 20 Locked QAM 256 20 609000000 Hz 3.5 dBmV 40.3 dB 0 0 21 Locked QAM 256 21 615000000 Hz 3.5 dBmV 40.9 dB 0 0 22 Locked QAM 256 22 621000000 Hz 3.2 dBmV 40.9 dB 0 0 23 Locked QAM 256 23 627000000 Hz 3.2 dBmV 40.3 dB 0 0 24 Locked QAM 256 24 633000000 Hz 3.2 dBmV 38.6 dB 0 0 25 Locked QAM 256 25 639000000 Hz 3.2 dBmV 36.9 dB 0 0 26 Locked QAM 256 26 645000000 Hz 3.2 dBmV 39.9 dB 0 0 27 Locked QAM 256 27 651000000 Hz 2.7 dBmV 39.5 dB 0 0 28 Locked QAM 256 28 657000000 Hz 2.4 dBmV 41.1 dB 0 0 29 Locked QAM 256 29 663000000 Hz 2.5 dBmV 40.3 dB 0 0 30 Locked QAM 256 30 669000000 Hz 2.4 dBmV 39.5 dB 0 0 31 Locked QAM 256 31 675000000 Hz 2.5 dBmV 39.2 dB 0 0 32 Locked QAM 256 32 681000000 Hz 2.5 dBmV 38.9 dB 0 0
Upstream Bonded Channels Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power 1 Locked ATDMA 3 5120 Ksym/sec 17300000 Hz 34.5 dBmV 2 Locked ATDMA 4 5120 Ksym/sec 23700000 Hz 34.5 dBmV 3 Locked ATDMA 1 5120 Ksym/sec 30100000 Hz 34.5 dBmV 4 Locked ATDMA 2 5120 Ksym/sec 36500000 Hz 34.5 dBmV 5 Not Locked N/A Unknown 0 Ksym/sec 0 Hz 0.0 dBmV 6 Not Locked N/A Unknown 0 Ksym/sec 0 Hz 0.0 dBmV 7 Not Locked N/A Unknown 0 Ksym/sec 0 Hz 0.0 dBmV 8 Not Locked N/A Unknown 0 Ksym/sec 0 Hz 0.0 dBmV
