Visitor

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2 Messages

Sunday, February 1st, 2026 10:21 AM

Packet loss so bad Pc is unplayable

Recently moved into a new spot and bought the most expensive Xfinity internet package 2000 upload/download.

PC gamer so I have an Ethernet cable (100ft) cat6 running from my XB10 modem/router combo in the living room down to the basement. It’s fine maybe 20% of the time with no lag/packet loss but 80% of the time packet loss is to the point every game is unplayable.

I’m talking valorant packet loss spiking all the way to 100% - but usually goes from 0-35ish% every few seconds. Completely unplayable, enemies skipping across my entire screen can’t even shoot.

I’m concerned my coax cable is damaged but I don’t know a lot about internet since I’ve always lived in apt buildings with no issues. I even bought 2 different 100 ft cables bc I thought my Ethernet cable might be damaged but the same issue happens with both.

Anyone have any suggestions… should I buy an extender instead of running that long of an Ethernet cord? Maybe a tp link? Replace my xb10 modem/router combo? Do you think it’s my coax cable?

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Visitor

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2 Messages

2 days ago

no i having same issue with same 100 ft cord it ran fine till about a week ago now i get skips in game all the time and bad lag pauses making gamin g all but pointless

Visitor

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13 Messages

1 day ago

[Edited - Inflammatory] But diagnose what you can on your end (coaxial cables, ethernet cables, update firmware on gateway, put XB10 into "bridge mode" to bypass the router (to test if that part is bad - don't forget to turn back on afterwards), try different ports, turn off QoS settings to test, turn off wifi to test, unplug printers in the area (oddly can interfere with router), test another device through ethernet, and lastly if possible, run another coax from the outside demarcation point (where mainline meets your coaxial cable that's in the walls). What I did was get a standard coaxial at first and brought my equipment outside with an extension cord and ran an ethernet cable out of the window to test without having to completely run another coax through my walls in case it wasn't the issue. 
They will come out and change the mainline free or charge if you believe it's causing the issues. I'd take it advantage of it though. Just watch them because both houses they've ever came out for me somehow the door to the demarcation point was magically broken after their visit. 

(edited)

Official Employee

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3K Messages

9 hours ago

 

user_rz6g8g Thanks for reaching out about the lag and packet loss concern. This is something that would cause me concern as well being a gamer myself, and certainly not the experience we want for you. I would be happy to troubleshoot the cause with you, and work to get it fixed as quickly as possible. 

Can you send us a direct message with your full name, name of account holder (if different), and service address please?

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Expert

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115.8K Messages

4 hours ago

@user_rz6g8g @XfinityEricB  

Please circle back here and post any possible solutions for the issue here in these open public forums so that all readers here may benefit from the exchange / info. This is in keeping with the spirit for which these public help forums were originally intended. Thank you.

(edited)

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