Visitor

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5 Messages

Thursday, July 16th, 2026 11:11 PM

Packet Loss, Jitter & Latency Issues

We are in a part of Baltimore County that just had Xfinity infrastructure installed. We jumped at the chance to get high-speed internet installed in our home and signed up for 1G service for 5 years. It's brand new provisioned EPON. It's proved to be terribly unreliable. We work from home and can barely conduct Teams or Zoom meetings, streaming is no better than when we were on TMobile home internet. 

I've hired IT professionals to come out and diagnose the issue. I've run my own tests. Our install tech worked with us for weeks and no one at Xfinity wants to help or acknowledge the issue. 

We’ve isolated intermittent packet loss and jitter to an upstream Comcast routing hop. Direct testing at the gateway is clean locally, but TCP-based path testing shows intermittent latency variation and micro-loss affecting real-time UDP applications like Zoom. Teams tolerates it better due to buffering, but Zoom is exposing the instability. We need escalation to network engineering to evaluate routing stability, jitter, and edge node behavior.

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Official Employee

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453 Messages

10 days ago

Hello @mscott3leaf, and thanks for sharing your experience and concerns here on our Xfinity Community forums!  

I can certainly understand your frustration, especially after investing in newly available service, working with technicians, and even bringing in IT professionals to help identify the issue.

Given the troubleshooting that's already been performed, we'd like to better understand your network environment so that we can get a clearer picture of how everything is connected.

Can you share a few additional details about your setup?
 - Are you using the Xfinity Gateway as your primary router, or is it configured in Bridge Mode with a separate router connected?
 - If you're using a secondary router, what is the make and model?
 - What types/brands of devices are you using for teams/zoom? 
 - Are the devices experiencing the packet loss, jitter, and latency issues connected via Ethernet or Wi-Fi or both?
 - If using Wi-Fi, which band are they connected to (2.4 GHz, 5 GHz, or 6 GHz)?

 - Were your tests performed on a hardline connection to the modem?
 - Are these issues occurring on a single device or across multiple devices on the network?

This information will help us better understand the environment and the troubleshooting steps already performed.

Visitor

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5 Messages

@XfinityCliff​ - Thanks for your response.

Are you using the Xfinity Gateway as your primary router, or is it configured in Bridge Mode with a separate router connected?  It is in Bridge Mode with a mesh network.
 - If you're using a secondary router, what is the make and model? - We have Netgear Orbi mesh network setup, as recommended by the Xfinity install tech. 
 - What types/brands of devices are you using for teams/zoom? Devices? The Xfinity Gateway, Orbi mesh network (all hard-wire back loaded). I'm on a PC, hard-wired into the CAT network. 
 - Are the devices experiencing the packet loss, jitter, and latency issues connected via Ethernet or Wi-Fi or both? Both
 - If using Wi-Fi, which band are they connected to (2.4 GHz, 5 GHz, or 6 GHz)? 5GHz. I spent hours with Xfinity & Netgear support as well as an IT professional setting things up and trying to work the settings to get better performance. 

 - Were your tests performed on a hardline connection to the modem?  Yes. Same results via hard-wired connection to the gateway, same hard-wired into a mesh node and same result on the Wi-Fi and ethernet. We can literally see the packet loss via PingPlotter. It's 2 specific hops. We just need someone at Xfinity to work out our routing and it would likely alleviate the issue.  I had a separate office location with Xfinity, in the same area, that had a completely different routing and never had this type of issue. 
 - Are these issues occurring on a single device or across multiple devices on the network? Across all devices. It's intermittent. A regular speed test, via Ookla or the Xfinity tool, generally look ok. It's when we're streaming, on video conferencing or on VOIP calls.  In Zoom & Teams we get "unstable internet" messages often. 

It is super frustrating that we can literally see the issue happen in real time, but we can't get Xfinity to help with the issue.  I'm hopeful you may be able to get us some traction.

Official Employee

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2.3K Messages

@mscott3leaf Thank you very much for the detailed information that you have provided. Could you please send our team a direct message with your full name and full address? Our team can most definitely take a further look at this issue.To send a "Direct Message":
Click "Sign In" if necessary
• Click the "Direct Message chat" icon
• Click the "New message" (pencil and paper) icon
• Type "Xfinity Support" in the "To:" line and select "Xfinity Support" from the drop-down list which appears. The "Xfinity Support" graphic replaces the "To:" line
• Type your message in the text area near the bottom of the window
• Press Enter to send it

I am an Official Xfinity Employee.
Official Employees are from multiple teams within Xfinity: CARE, Product, Leadership.
We ask that you post publicly so people with similar questions may benefit from the conversation.
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Visitor

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5 Messages

@XfinityJanelle - Thanks,. Hoping to get some traction. At this point, we're looking at Starlink and me potentially renting a space with reliable highspeed. This is super frustrating. 

Official Employee

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3K Messages

mscott3leaf Good morning! I had already responded to your direct message. If you want to hop into the DM thread we can dive in on investigating this situation. 

I am an Official Xfinity Employee.
Official Employees are from multiple teams within Xfinity: CARE, Product, Leadership.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Please mark as Best Answer.tick

Visitor

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5 Messages

@XfinityTommy​ Thanks. I'll keep an eye on the Direct Message area and respond there. 

Expert

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119.6K Messages

9 days ago

@mscott3leaf @XfinityJanelle @XfinityTommy 

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)

Visitor

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5 Messages

@EG​ Will do. Still nothing yet. Our neighbor who is also on the same run is having the same issue. I wish Fios had one the bid for internet!

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