Ethernet speeds slow.

[hexed night]

Hi all, my ethernet speeds have dropped off recently. When testing, it'll hit around 8-900Mbps then steadily drop in increments of approximately 50Mbps till it get to around 250Mbps.

I have removed the WAN from my router and plugged it in directly to my PC and got the same results. I have speed test from my router, a 3rd party TP-Link AX6000 which shows around 7-800Mbps. It has the latest firmware, I updated due to this issue.

Upload speeds do the same, start at around 100Mbps and end up at around 40Mbps.

I have tried both the 2.5Gbe and 5Gbe on my mobo (asus rog crosshair x870e hero) same results.

Cables between router, 3rd party router and PC are brand new (bought due to this issue).

WiFi speeds are about what i'd expect without an antenna, 500Mbps give or take, my phone will get around 700Mbps.

Every now and again, the issue disappears and i'll be getting what I expect in speeds, around 1Gbps.

I intend to plug in another device to the LAN and test, that should confirm that it is an issue with my machine.

Assuming it is an issue with my machine, does anyone have any ideas on what I can do to fix the issue? All the drivers are up to date.

[brittle yarrow]

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[upbeat cedar]

Is it only happening with your pc? What happens when you do a speed test on your mobile or something?

[hexed night]

WiFi speeds are as i'd expect (much faster than the LAN)

[upbeat cedar]

I’d say it’s a wire issue

I know you say the cables are new but have you tried a different cable

[ebon palm]

have you tried another port on your router (to plug the ethernet cable into)

[hexed night]

Yes, I've tried a few cables. I bought the new ones just in case.

[hexed night]

Yes, I've tried a couple of ports.

[upbeat cedar]

What anti virus do you use? Sometimes it can block the network

I had my router plugged into an extension lead once that had some sort of built in firewall feature and that was also blocking my internet 😂

[hexed night]

Bit defender. I've used it for a couple of years now, i'll shut it down and speed test now.

[brittle yarrow]

:tada: Congrats @hexed night, you levelled up to 3! :tada:

[upbeat cedar]

Yeah try that, if not also check the power saving settings on the network adapter

[hexed night]

Results were the same for both of these 😦

[upbeat cedar]

Can you reinstall the drivers?

[hexed night]

Device manager, uninstall device, search for new hardware then install the driver?

[upbeat cedar]

Correct

[ebon palm]

you can also get the drivers from the motherboard website directly https://rog.asus.com/uk/motherboards/rog-crosshair/rog-crosshair-x870e-hero/helpdesk_download/

they should work better for your specific hardware

[hexed night]

Results are the same.

[upbeat cedar]

If you’ve tried everything, only other things I can suggest is a hard reset of your router, make sure your router has the latest firmware install, or it’ll be a network card issue

[hexed night]

Can't be that, I can test internet speeds from my 3rd party router, and they are normal. The 3rd party router was updated due to this issue.

[ebon palm]

i have a feeling it's more PC related because wi-fi was fine, other devices r fine, just LAN that's the issue

[hexed night]

Yeah, me too 😦

[ebon palm]

other than a speedtest, are your download speeds affected when downloading a large file?

[hexed night]

Ah, I probably should've mentioned this before... I tested large file transfer between my NAS and PC. Speeds were normal. I'm gonna double check that now, though. That's my bad guys, feels like it could be a clue.

[hexed night]

Confirmed, speeds are holding steady at 113MB/s. Well bugger me with a pitch fork, I think it's the ISP... somehow.

[ebon palm]

download this, see if the speeds are decent (i.e. don't bug out)

it's just a giant png of noise

[hexed night]

Peaked at around 18MB/s.

[brittle yarrow]

:tada: Congrats @hexed night, you levelled up to 4! :tada:

[ebon palm]

which speedtest are you using?

[hexed night]

speedtest.net is the only one I found reliable.

ookla

[ebon palm]

try https://fast.com/ or google's speed test (https://www.google.com/search?q=google+speed+test)

[hexed night]

Fast is showing same results that I had, Google is showing what I should have. I notice that google doesn't hold the speed for long, though. The speeds drop off over time on the other sites.

[ebon palm]

how do those results compare when they're all done on mobile (i.e. excluding ookla)

[hexed night]

Both are showing around what i'd expect on WiFi on a phone.

5-600Mbps over WiFi give or take

[ebon palm]

do you have armoury crate installed

[hexed night]

Yes.

[ebon palm]

close it temporarily and make sure it isn't open in the background, then try the speedtest again

there have been previous reports that it causes internet throttling issues, which sounds similar to the issue you have with ethernet

[hexed night]

Christ, there's like 40 of them, I can't be sure it's closed all the way

[hexed night]

Results are the same, assuming i've managed to get that armoury crate shut down fully.

[ebon palm]

i mean you could even try uninstalling it temporarily to see if that helps

[hexed night]

That's exactly what I did 🤣 . Gotta take off and nuke it from orbit, it's the only way to be sure.

[ebon palm]

i recommend restarting after uninstalling - just to make sure everything's stopped running

[hexed night]

Yes, I did that, got a popup that told me to.

[ebon palm]

are the results still the same?

[hexed night]

Yes mate

[ebon palm]

did you use the drivers from this page?

[hexed night]

Yes.

[brittle yarrow]

:tada: Congrats @hexed night, you levelled up to 5! :tada:

[ebon palm]

just looking at the specs of your motherboard... there are two different types of ethernet listed, so i assume you have two ports?

which one are you plugged into?

[hexed night]

Yes, 2.5Gbe and 5 Gbe. Results are them same on both. Plugged into the 5 just now

[ebon palm]

the 5G is realtek but the 2.5G is intel 😭

interesting choice to have two different brands

[ebon palm]

just to check, did you download the intel drivers or the realtek drivers?

[hexed night]

Realtek

[ebon palm]

alright

[hexed night]

Intel driver is the same as the one already installed.

[ebon palm]

you should do a network reset on your PC - it just restores everything network related to its original settings

[hexed night]

Done. Speed test results are the same.

Although there are only 4 things under network adapters now, before there was 8-9.

[hexed night]

I have a close friend that is a network engineer (NHS). He asked me if I had a program called "Game First" installed. I did and that was what was causing the issue. If there was a way to physically hurt software... that program would end up in a shallow grave. Anyway, thanks for your time, chaps. Much appreciated.

[ebon palm]

oh interesting - thanks for letting me know, i know for the future now