Marknles's profile

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4 Messages

Thursday, November 20th, 2025 2:36 AM

Arris S34

Not getting full speeds from new Arris S34 , signal levels appear in range , any suggestions ?

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Official Employee

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2.3K Messages

2 hours ago

Hey @Marknles, Thank you for visiting our official Xfinity Forums Community support page. We would be more than happy to assist in troubleshooting the Xfinity Internet connectivity issues. 

 

Could you please provide some further details such as your current Xfinity Internet plan, what speed test results are you receiving, along with what troubleshooting steps you may have already tried? We hope to hear from you soon.

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1.2 Gpbs + extra 100 Mbps down / 35 Mbps up - Testing ok? on down ( 950 - 1050 ) -- up seems capped/limited to 19-20 Mbps - Tried all the basic t-shooting steps - TODAY , replaced Netgear modem that was limited to 1 Gbps - TODAY , tested at 950-970 / 35-40  Mbps which was consistent with it's performance since getting the 1.2 Gbps plan - TODAY , activated the Arris S34 through the Xfinity app - latest version - and it seems to have the upload capped , checked signal levels in the modem and they are in the range and pretty consistent from ch to ch

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4 Messages

Also of note - today was using the Xfinity speed test , with the old modem , it worked fine - 

With the new modem , the Xfinity speed test site reports 200-300 Mbps down , 0.7 - 1.5 Mbps up 

Ookla reports the speeds in the post above - thought it was interesting that the Xfinity site shows what it does

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