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user_bc9889
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11/11/2026 3:45 AM

Internet Download and Upload Speeds Not Close to Plan

Hello,

My issue is that my internet download and upload speeds are nowhere near what my plan states. Below is a screenshot of my current internet plan. I've reset my router many times (I have an ARRIS SBG10 router) and have run internet speed tests; they average around 150 Mbps - 170 Mbps download and 0.5 Mbps - 1.5 Mbps upload on a CAT6 Ethernet cable.

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BruceW

Gold Problem Solver

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27.8K Messages

3 hours ago

@XfinityJosephA wrote: "... The SBG10 is only going to work with lower speed tiers as of today."

Worse, the SBG10 is no longer compatible with Comcast/Xfinity Internet service. Follow the "See all modems" link near the bottom of https://www.xfinity.com/support/internet/customerowned, and then check the devices listed under the "All compatible modems by brand/Arris" heading. The SBG10 is no longer listed there. When it was last listed as compatible it was approved for use with plan speeds "Up to 392 Mbps".

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XfinityJosephA

Official Employee

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2.6K Messages

9 hours ago

 

user_bc9889 it's always possible the issue is the modem. How long have you seen this speed and have you seen the modem drop offline at all? The SBG10 is only going to work with lower speed tiers as of today. 

 

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