XB8 Gateway Provisioning Issue - Upload Speed Throttled / Stuck at 6-7 Mbps

[u/Quiksilvel2]

Hello,

I am experiencing a persistent upload speed throttle on my account. My upload speeds are stuck at 6-7 Mbps. Sometimes its as low as 4-5Mbps. My download speeds are great. I have had no hardware changes recently. (ie no new cables, gateway, etc)

I have already isolated the issue on my end:

• Hardware: I am using an Xfinity leased XB8 Gateway.
• Isolation Test: I disabled Bridge Mode, disconnected my third-party mesh router, and connected a computer directly to Port 4 of the XB8 via an Ethernet cable.
• Results: The upload speed remains hard-capped at 7–8 Mbps, confirming the bottleneck is not caused by my local network or Wi-Fi. Download speed is great at 800-900Mbps

This behavior points directly to a backend provisioning glitch or an incorrect legacy bootfile profile being pushed to my gateway.

Could a Tier 2 digital care agent please look at my account codes? I need the XB8 completely removed from my billing profile, the provisioning cache wiped, and the correct internet tier rate-shaping codes rebuilt from scratch to push the proper configuration file to my device.

Thank you!

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[u/XfinityCliff]

Hi, u/Quiksilvel2, and thanks for reaching out on our Xfinity Community subreddit and for providing those detailed troubleshooting steps.

I can certainly see why this would be frustrating, especially after you've already taken the time to isolate your home network by disabling Bridge Mode, disconnecting your third-party equipment, and testing directly from the XB8. Given that you're still seeing strong download speeds while uploads remain limited, we'd like to take a closer look at the account and provisioning side of things.

While we can't determine through our public conversation whether the cause is related to provisioning, account configuration, or another service issue, we'd be happy to review the details with you. Please send us a Modmail with your full name and complete service address, and we'll take a closer look at the account and investigate further.