Slow Upload Speed All Of A Sudden

I have a Netgear 1900 c7000v2 modem/router (installed in April 2019) ethernetted to my PC (new in March 2019). I have the Cox Internet Preferred 250 plan (250 download and 10 upload) and normally get about 280-290 mbps download and 10-11 mbps upload. Recently, I noticed I am only getting 0.6 mbps on the upload. I have reset the modem, changed the port and cable, checked for updates, etc. I have good channel locking on 24 of 24 download channels and 4 or 8 upload channels.  I switched to wifi and got 230 on the download and 10.8 on the upload, ie pretty normal for wifi with the other PCs/Laptops in the house that operate on wifi. So, what is wrong? Any idea if I have a mechanical problem with the modem/router, or the PC?

Not sure what specs might be useful, but:

Dell XPS 8930 (Apr 2019)

Intel i7-8700 @ 3.2 ghz

16 RAM

Win 10 22H2

Killer E2400 gb Ethernet Controller

Qualcomm QCA 9377 802.11ac Wireless Adapter

Nvidia GEforce GTX 1050 Ti

Baseboard Dell, ODF425, A00

Thanks

The speed provided in the original post were from speedtest.

Ethernet:  Ping 8, Download 294, Upload 0.64.

WIFI:  Ping 10, Download 212, Upload 10.8

Hope that helps.

Madman,

I have already tried both.  Multiple ports on the router modem.  Only one port on the pc.  Have also tried troubleshooting and updating drivers.

Do you have any other wired device that you can try running a speedtest from?

Have you tried running the Network Reset through Windows?

Reset the network on the system see if that clears it up.

Go into Setting
Select Network and Internet
Make sure you are under Status in the left
On the Right scroll down and select Network Reset
Read the information and then select Reset Now
Select Yes for the network to be reset and the system to reboot.
The rest before the system reboots may take a few minutes

I would imagine that if the network needed to be reset that the wireless connection would also be exhibiting the slow upload speeds as the wired does.

I have tried updating drivers with both Windows and Dell, with no change in performance.  Admittedly, the dell driver page/process seems confusing to me, but I downloaded and installed a Killer driver.

I hooked up another PC to the router and i get good speedtests:  289 download and 10.87 upload, which is what is expected with my plan.  It would seem that indicates the router-modem is good, and I assume the card or driver in the PC would be the problem causing slow upload speeds with ethernet.

Id replace the card.

What was the name of the driver that you downloaded?

Are you entering the Dell Service Tag to narrow down the driver list to just your system?

Did you try what was posted in Post 7 to reset the network on that system?

What security software are you using?

Ither than that I have to agree with Cryptodan the NIC is going out.

What was the name of the driver that you downloaded?

Killer-PCIe-Ethernet-Controller-Driver

Killer-Control-Center-Application

Qualcomm QCA61x4A and QCA9377 Wi-Fi and Bluetooth driver

Dell XPS 8930 system BIOS

 

Are you entering the Dell Service Tag to narrow down the driver list to just your system?

Yes

 

Did you try what was posted in Post 7 to reset the network on that system?

Yes

 

What security software are you using?

Just Windows 10 Security

 

Other than that I have to agree with Cryptodan the NIC is going out.

The ethernet port is part of the motherboard.  I guess I would have to get a separate NIC card.

Pretty sure the culprit is the Killer Ethernet stuff. I have 3 XPS 8930s that have fallen victim to the problem within a week. One on latest Win 10 and 2 on latest Win 11. I don't know if an update killed them or what's going on. All w/ e2400 card/chip. I have not yet figured out the solution but disabling the Killer services seems to help.

Edited by kabookie2, 21 February 2023 - 07:18 PM.

Were they working prior to this update?

Edited by Rustys519, 22 February 2023 - 12:29 PM.

Kabookie2,

Sounds like the problem is due to some update since the same thing happened to all your machines as well as mine.  Good to know it effects both Win 10 and 11.  I too have no idea when, if, or how it happened.  How did you "disable the killer services"?  I can uninstall the killer intelligence center in programs/apps, which as far as I know would not cause me any problems.  I could also uninstall the "Killer Ethernet Performance Driver Suite UWD" from control panel/programs/programs and features, but I worry that could cause problems with my ethernet connection.

As of now, I am just kind of living with what I currently have with the ethernet connection.  It gives me almost 300 mbps on the download, and I don't really notice the upload limit of about 0.65 mbps unless I am uploading a huge file.  If I have to upload something huge, I plane to just switch to wifi and then I get my usual 10-11 mbps upload speed.

I think I could also add a separate NIC card and just plug my cable into that, but for now just living with it is "good enough" without spending money or risking any follow on issues due to making changes.  At least I know my router-modem is OK.