Visitor

 • 

5 Messages

Thursday, May 21st, 2026 2:04 PM

Jitter and Bufferbloat problem

Hello,

I would like to report ongoing internet stability issues with my Xfinity connection.

Although the download and upload speeds appear normal, I am experiencing significant jitter, latency spikes, and bufferbloat, especially during gaming and real-time applications. When running bufferbloat and latency tests, the connection shows instability and inconsistent performance.

The issue affects:

  • Online gaming

  • Voice communication

  • Streaming stability

  • General network responsiveness

I have already tested multiple devices and connections, and the problem appears to be related to the network quality rather than device performance.

I would appreciate it if this issue could be escalated to a technician or network specialist to check:

  • Signal quality

  • Node congestion

  • Upstream latency

  • Packet loss/jitter

  • Bufferbloat under load

Thank you for your assistance.

Oldest First
Selected Oldest First

Visitor

 • 

5 Messages

7 hours ago

Jitter is 39.2 and it should be below 5 ms. Average latency should be below 20 ms. The connection is unstable and I’m experiencing dropouts. I can’t do anything with this internet. Please take action and fix the internet connection.

Expert

 • 

118.1K Messages

7 hours ago

What do the modem's signal status values look like ? Try getting them here; http://192.168.100.1 or here http://10.0.0.1 


Please copy all of the text in its entirety of the *Downstream Power Levels*, the *SNR's* (Signal to Noise Ratios), and the *Upstream Power Level* numbers and paste them into your next post.


What is the exact make and model number of the modem / gateway device ?

Is this with a WiFi connection ?

Visitor

 • 

5 Messages

I can’t open http://10.0.0.1, and I don’t have access to that in the mobile app. Can you help?

Visitor

 • 

5 Messages

My connection isn’t Wi-Fi, it’s wired with a cable, and the internet is really bad. The jitter is killing me.  

Name Device : XB8

Expert

 • 

118.1K Messages

@George1_

 Can you help?

Not as much without having that signal info. Here are some tips you can try for now if you haven't already;

https://forums.xfinity.com/conversations/your-home-network/connection-troubleshooting-tips/602da777c5375f08cdea3db9 

I am not a Comcast Employee.
I am a Customer Expert volunteering my time to help other customers here in the Forums.
We ask that you post publicly so people with similar questions may benefit from the conversation.

Was your question answered? Please mark an Accepted Answer!tick

Visitor

 • 

5 Messages

When I try to run the test, this is what opens for me

Expert

 • 

118.1K Messages

@George1_​ 

First, try clearing the browser's cache and cookies. Try using incognito/private mode. Try using an alternate browser.

I am not a Comcast Employee.
I am a Customer Expert volunteering my time to help other customers here in the Forums.
We ask that you post publicly so people with similar questions may benefit from the conversation.

Was your question answered? Please mark an Accepted Answer!tick
forum icon

New to the Community?

Start Here