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mykchicken's avatar
mykchicken
Guide
Apr 17, 2024
Solved

CM3000 painfully slow speeds via Comcast

Hello folks - anyone else using a CM3000 and experiencing painfully slow speeds?  I've ran through the typical troubleshooting (reboot, factory reset), confirmed the Modem is all green for Up/downst...
  • mykchicken's avatar
    mykchicken
    Apr 18, 2024

    Wanted to follow up on this - 

     

    I stopped by xfinity store and picked up an XB8 from them.

    Plugged it in at home & within minutes I'm seeing the advertised speeds... pretty much nail in the coffin - it's the Modem that's the problem.

     

    Going the RMA route to return it. 

     

    Truly appreciate the ideas & support of all you fine folks.

    Cheers

mykchicken's avatar
mykchicken
Guide
Apr 17, 2024

I've had their techs remove it from my account and reprovision it 3 times over the last week with no improvements, but good call out. 

 

Attaching the cable connection screen. It's a long page 😄

The only thing that jumps out is that some of the power values are a bit high...but that shouldn't cause this kind of issue, and the modem internal time is 1 hour behind but...there's no way that's an issue..right? 

 

Good call on the exchange...at this point it's been several hours spent and it's definitely a $ net loss overall.