Visitor

 • 

4 Messages

Tuesday, March 17th, 2026 3:23 AM

20% Packet Loss

A few weeks ago, the WiFi card on my XB8 failed so I exchanged it for a new one at my local Xfinity store. Now, when I am gaming on my PS5, I am getting consistent packet loss/late packets, especially if one or more devices are streaming. This was never a problem with my old gateway. Using a packet loss tool, my packet loss during these times is between 5%-20% which is insane. The only thing that I see on my account is the streaming device, an Xfinity phone, is on 'PowerBoost' and is taking priority over other devices.


I have a 1gb plan. My PS5 is on a wired connection, as was my computer when doing speed tests. The streaming devices are usually using the WiFi.

Oldest First
Selected Oldest First

Official Employee

 • 

2.6K Messages

20 days ago

Hey @user_gyu753. Thank you for visiting our official Xfinity Forums Community support page. We would be more than happy to assist with the Xfinity Internet connectivity issues you are experiencing. Do you currently subscribe to our Xfinity Pro service which allows you to prioritize specific devices? 

With the packet loss, do you experience any issues when connected directly to the Xfinity xFi Gateway using an Ethernet cable? Could you also please visit our 'Tips for troubleshooting your Xfinity Internet connection' knowledge base to find the signal levels to the modem and paste them here for review? Please remove any IP addresses if shown. 

Visitor

 • 

4 Messages

I do not have Xfinity Pro. It would be nice to have so I could turn off PowerBoost on the cell phones to see if that helps.

My PS5 has always been connected with and Ethernet cable. With my old gateway that everything was fine with until the WiFi signal fail, it was connected via ethernet through a gb network switch. With the new gateway, for troubleshooting and currently, the PS5 is connected directly to the 2.5gb port on the gateway with an Cat6 ethernet cable.

I'm logged into my gateway during my earlier troubleshooting and apparently forgot the password. Still working on that.

Visitor

 • 

4 Messages

1 day ago

The forum keeps failing to load images so here are tables:

Downstream Channel Bonding Value

Channel ID 44 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 193
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 (MHz) 669 477 483 489 495 507 513 519 525 531 537 543 549 555 561 567 573 579 585 591 597 603 609 615 621 627 633 639 645 651 657 663 805000000
SNR (dB) 40.6 40.7 40.5 40.1 39.8 40.7 40.9 40.4 40.4 40.1 39.8 39.6 39.9 39.8 40.4 40.6 40.6 39.8 39.0 38.8 39.5 39.7 40.8 41.3 41.4 39.8 40.6 40.3 40.8 40.4 40.6 40.2 39.7
Power Level (dBmV) -4.7 -4.2 -4.5 -5.3 -4.9 -4.3 -4.1 -5.1 -5.1 -5.4 -5.7 -6.0 -5.8 -5.8 -4.0 -4.3 -4.2 -5.4 -6.0 -6.5 -5.8 -5.9 -4.3 -3.7 -3.2 -4.2 -5.0 -5.5 -4.7 -5.3 -5.2 -5.6 -7.7
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 256 QAM OFDM
Unerrored Codewords 49565974 76996622 77003148 77008933 77014642 77021044 77027712 77034389 77087953 77047115 77053209 77058997 77064212 77072022 77078115 77083766 77139625 77096674 77101992 77108463 77114206 77120478 77126126 77132315 77188935 77144443 77149842 77155277 77162882 77167464 77171418 77172990 49565974
Correctable Codewords 48422334 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 48422334
Uncorrectable Codewords 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Upstream Channel Bonding Value

Channel ID 1 2 3 4 5 6
Lock Status Locked Locked Locked Locked Locked Locked
Frequency (MHz) 16 22 29 35 40 10
Symbol Rate 5120 5120 5120 5120 2560 2560
Power Level (dBmV) 50.3 51.0 51.5 50.8 51.0 50.0
Modulation QAM QAM QAM QAM QAM QAM
Channel Type ATDMA ATDMA ATDMA ATDMA ATDMA ATDMA

Expert

 • 

117.2K Messages

14 hours ago

@user_gyu753 

The upstream power is too high, and it may be intermittently fluctuating even higher to out of spec levels. The dowstream power is on the low / weak side as well. That can cause random disconnects, spontaneous re-booting of the modem, speed, packet loss, latency problems, and the un-bonding of channels.

In an effort to try to obtain better connectivity / more wiggle room, check to see if there are any excess/unneeded coax cable splitters in the line leading to the modem that can be eliminated/reconfigured. Any splitters that remain should be high quality and cable rated for 5-1002 MHz, bi-directional, and no gold colored garbage from Home Depot, Target, Wal-Mart, etc. Splitters should be swapped with known to be good / new ones to test.

Also, check the coax cable for any damage such as cuts, nicks, abrasions, kinks, sharp bends, or animal chews.

If there aren't any unneeded splitters that can be eliminated and if your coax wiring setup can't be reconfigured so that there is a single two-way splitter connected directly off of the drop from the street / pole with one port feeding the modem and the other port feeding the rest of the house/equipment with additional splits as needed and you've checked all the wiring and fittings for integrity and tightness and refresh them by taking them apart then check for and clean off any corrosion / oxidation on the center wire and put them back together again, then perhaps it's best to book a tech visit to investigate and correct.


Good luck with it !

Visitor

 • 

4 Messages

11 hours ago

I will look at this. But I highly doubt the coax is the problem. Why was everything working just fine with my old gateway, also a XB8, and as soon as it was replaced, for the failing WiFi signal, I started to have packet loss and latency issues? 

I work as a automation programmer. In my experience, if you replace a piece of equipment and a new issue unrelated to the original starts, it is always something with the new equipment. Either firmware, hardware, or the overall unit is bad out of the box. I am more likely to either get the the gateway replaced or find a new provider then pay for a tech.

forum icon

New to the Community?

Start Here