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I have a CM1200 and 1gb service but only get about 560mbps downstream

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New Poster

I have a CM1200 and 1gb service but only get about 560mbps downstream

Any idea what can cause this?  I connected directly to the CM1200 to check speeds.

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Silver Problem Solver

Re: I have a CM1200 and 1gb service but only get about 560mbps downstream

Did you watch this?

https://forums.xfinity.com/t5/Your-Home-Network/Gigabit-speed-troubleshooting-video/m-p/3310454#M316...

 


I am not a Comcast Employee.
I am just a customer, volunteering my time to help other customers here in the Forums.
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New Poster

Re: I have a CM1200 and 1gb service but only get about 560mbps downstream

There is a known issue with the CM1200 and Xfinity. I also have this modem and with LAG enabled I pull 1200down / 45 up however after a period of about 6 hours the connection starts drops speeds to 25/25 until a modem reset occurs. Netgear can't fix it because xfinity has to push the firmware update. can we please get a reply on this? its been a issue for over a year and there are hundreds of others maybe thousands by this point.