CBR750 Slow upload speed

Question

Hi, I just installed the AX4200 WiFi Cable Modem Router (CBR750) and I am getting the expected 600+Mbps download, but upload is only around 5Mbps when I was getting (and am paying for) 40Mbps with the Comcast xFi modem. This is a major problem since that upload speed is needed since my wife and I both work at home and have frequent video calls. I am on the latest firmware, and these numbers are both from device tests right next to the router, and from the router speedtest itself.

Any suggestions?

plemans · Answer

Do you have a screensnip of the cable connections page and event logs?&nbsp;

Gunnerpunk · Answer

These all look to be from the time I was initially setting up the modem, possibly before the firmware updated:Thanks for looking!

KevinLiT · Answer

Hello Gunnerpunk,
&nbsp;
Welcome to the NETGEAR Community!
I understand that you are experiencing lower upload speeds than you originally expected. Please ensure that you are using the current FW version 4.6.14.4. &nbsp;
&nbsp;
If you are not on the current FW please follow the instructions below to update your CBR750 Mesh System:
How do I manually upgrade firmware on my Orbi router using orbilogin.com? | Answer | NETGEAR Support
&nbsp;
Please navigate to the link below to download the current FW for your CBR750 Mesh System:
Orbi CBK753 | WiFi System | NETGEAR Support
&nbsp;
Best,
Kevin
Community Team
&nbsp;

Gunnerpunk · Answer

Yep, I mentioned in my original message that I am on the latest firmware.

FURRYe38 · Answer

Power levels look good and no Correctables or Un-correctables.&nbsp;
&nbsp;
However there are Errors, Criticals and Warnings that the ISP needs to look into and resolve. These indicate a modem side and line issue between the modem and ISP service box.&nbsp;
&nbsp;
Have the ISP check the signal and line quality UP to the modem.&nbsp;Be sure the ISP provisions the modem correctly.Be sure there are no coax cable line splitters in the between the modem and ISP service box.&nbsp;Be sure your using good quality RG6 coax cable up to the modem.&nbsp;Start with removing any amplifiers, signal attenuators, or splitters from the coax.From there check the line for kinks, damage, moisture in the line.Check the connectors for improperly made ends, foil touching the copper coax line, loose connections, bad/old/cheap connectors, or corroded connections. Replace them if you do.Be sure to power OFF the modem for 1 minute then back ON.https://community.netgear.com/t5/Cable-Modems-Routers/General-info-and-Troubleshooting-for-Cable-Modems/m-p/1530376#M12853https://kb.netgear.com/24311/Power-level-guidelines-for-a-NETGEAR-cable-modem-routerhttps://www.duckware.com/tech/solving-intermittent-cable-modem-issues.html

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CBR750 Slow upload speed

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