Upload Speed Via Ethernet Has Dropped Significantly On Specific PC

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Lyndon001

3 posts

Wannabe Geek

#303459 12-Feb-2023 09:15

Hi All,

I have an issue with the internet upload speed on our home desktop PC. Here are some details:

Internet plan is 300/100Mbps fibre with Vodafone
Modem is Vodafone HG659
Based in Wellington
PC concerned is connected via Ethernet cable
Speed test app reports normal download speed of 325Mbps but only 0.6Mbps upload speed
If connecting via WiFi both download and upload speed are normal (download 190Mbps, upload 100Mbps)
Other PCs (laptops) connected via the same Ethernet cable have normal 300/100Mbps speed

So, the issue appears to be specific to one PC and only for the upload speed and only on the Ethernet connection.

Also, the issue only started happening since last Saturday (4th Feb). Prior to then the upload speed was fine. Not aware that any updates have been applied to the PC in that time.

I have restarted the PC, the modem and the ONT with no improvement. Windows update reports drivers are up-to-date. I have also run the Windows troubleshooter which reports no issue detected.

My technical knowledge has reached its limit so any advice on what may be causing the problem and any suggestions to resolve the issue would be much appreciated.

Jase2985

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#3035307 12-Feb-2023 10:50

try using the browser or CLI to do the speedtest instead of the app, also try something like fast.com to rule out the speedtest app as the culprite

also try uploading a large file to something like google drive/dropbox etc to see if it is actually slow or just the app showing its show.

Lyndon001

3 posts

Wannabe Geek

#3035348 12-Feb-2023 13:02

Thanks for the ideas.

I initially noticed the issue while uploading a large (6MB) file to attach to an email in Gmail.

I had already run speed tests in the browser using both the Vodafone and Chorus speed tests.

I've now tried them again and also tried fast.com as you’ve suggested and they are all reporting slow upload speed (0.8Mbps).

I’m not sure what you mean when referring to CLI.

Interestingly, I just tried loading the 6MB file to Google Drive and it uploaded in about 5 seconds. I then tried attaching it to a Gmail email and it took 7 minutes to attach.

Spyware

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#3035355 12-Feb-2023 13:26

CLI = command line interface

Spark Max Fibre using Mikrotik CCR1009-8G-1S-1S+, CRS125-24G-1S, Unifi UAP, U6-Pro, UAP-AC-M-Pro, Apple TV 4K (2022), Apple TV 4K (2017), iPad Air 1st gen, iPad Air 4th gen, iPhone 13, SkyNZ3151 (the white box). If it doesn't move then it's data cabled.

Jase2985

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#3035356 12-Feb-2023 13:31

CLI is command line interface, but your other tests seem to indicate there is and issue somewhere. have your tried a different network cable between the PC and what ever its connected to?

Lias

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#3035360 12-Feb-2023 13:41

I once had an issue like this after Windows Update had applied a network driver update. Reinstalling the manufacturers recommended driver resolved it.

I'm a geek, a gamer, a dad, a Quic user, and an IT Professional. I have a full rack home lab, size 15 feet, an epic beard and Asperger's. I'm a bit of a Cypherpunk, who believes information wants to be free and the Net interprets censorship as damage and routes around it. If you use my Quic signup you can also use the code R570394EKGIZ8 for free setup. Opinions are my own and not the views of my employer.

Lyndon001

3 posts

Wannabe Geek

#3035489 12-Feb-2023 17:38

I tried a different cable but this did not make any difference.

I did however find a driver update which I installed. After rebooting, the upload speed returned to 100Mbps. Unfortunately about 2 hours later the speed has dropped back to under 1Mbps.

I'm still on Windows 10 so am wondering if it's time to do the Windows 11 upgrade and hope this resolves whatever is going on?

Lenovo

Shop now for Lenovo laptops and other devices (affiliate link).

Jase2985

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#3035492 12-Feb-2023 17:50

nope that shouldnt be your problem