[SOLVED] Slow Ethernet speeds in Win 10. Not in Linux, so not an hardware problem

[africsnail]

Hello,
I have been experiencing slow Ethernet speeds in Windows 10 (about 200 Mb/s), but on Linux I have installed I have full 500 Mb/s which our ISP guarantees.
Tested the speed using https://www.speedtest.net/ as well as torrent based speed test.

My MoBo: Asus ROG Maximus VIII hero
I have installed the newest drivers available for my board as well as tried older ones.

Thank you for any help

 

[Ralston18]

What network adapter(s) is/are installed on your motherboard?

Check the network adapter's configuration settings. Speed and Duplex.

Ensure that only the wired network adapter is enabled. The wireless adapter, if present, should be disabled.

Are you able to run and post the results of "ipconfig /all" (without quotes) via the command prompt?

 

[africsnail]

What network adapter(s) is/are installed on your motherboard?

Check the network adapter's configuration settings. Speed and Duplex.

Ensure that only the wired network adapter is enabled. The wireless adapter, if present, should be disabled.

Are you able to run and post the results of "ipconfig /all" (without quotes) via the command prompt?

I am using the onboard Ethernet adapter.
It automatically sets full duplex 1Gb/s so no problem here either.
I don't have any wireless adapter so I am sure it's running over Ethernet.

Result of ipconfig:
C:\windows\system32>ipconfig /all
Windows IP Configuration
Host Name . . . . . . . . . . . . : DESKTOP-JLCTBN8
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : Yes
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : home
Ethernet adapter Ethernet:
Connection-specific DNS Suffix . : home
Description . . . . . . . . . . . : Intel(R) Ethernet Connection (2) I219-V DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IPv4 Address. . . . . . . . . . . : 192.168.0.165(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : 6.11.2019 10:17:26
Lease Expires . . . . . . . . . . : 6.11.2019 11:47:25
Default Gateway . . . . . . . . . : 192.168.0.1
DHCP Server . . . . . . . . . . . : 192.168.0.1
DNS Servers . . . . . . . . . . . : 2606:4700:4700::1111 2606:4700:4700::1001 1.1.1.1 1.0.0.1
NetBIOS over Tcpip. . . . . . . . : Enabled

I am using 1.1.1.1 but it was same with google's 8.8.8.8 DNS

 

[Ralston18]

One hour lease time?

 

[africsnail]

One hour lease time?

I think that doesn't matter. And I can't do anything about that

 

[Ralston18]

FYI:

https://lazyadmin.nl/home-network/dhcp-lease-time/

Try changing the lease time to 24 hours (and maybe longer if no results) just as a matter of elimination.

 

[africsnail]

FYI:

https://lazyadmin.nl/home-network/dhcp-lease-time/

Try changing the lease time to 24 hours (and maybe longer if no results) just as a matter of elimination.

Ok, changed to 24h.
Unfortunately, I have still the same results

 

[Ralston18]

Next step: Flush DNS

https://www.lifewire.com/what-is-a-dns-cache-817514

 

[africsnail]

DNS flushed, but still getting same results

Next step: Flush DNS

https://www.lifewire.com/what-is-a-dns-cache-817514

 

[Ralston18]

Try manually setting speed and duplex. No auto.

 

[africsnail]

Try manually setting speed and duplex. No auto.

Still same results

 

[Ralston18]

Moving post to Networking category.

Someone working in a mixed Windows and Linux environment may have some suggestions.

 

[Botnus]

I'd assume the ports on the switch/router you're using are set to the correct duplex and speed since they won't talk with the computer if not. Are you getting a lot of packet loss? Is there maybe EMI or crosstalk messing with the cables? How long are the Ethernet cables, and do they have any sharp kinks in them? Have you tried using a different port? Maybe switching the PC's Ethernet connections and seeing if the issue remains constant, or if the computers' speeds switch? Does the Windows PC share a port with another device?

I've seen this happen before, and it was an issue with the physical cabling. The setting was unique and not at all a home network though, so I'm just going up the OSI model, here.

 

[kanewolf]

Do you have the ROG Game First software loaded? That can limit your download speeds.

 

[Ketchup79]

Where did you get the Windows driver for the Intel I219V controller? Also want to make sure Windows update isn't running, as that can mess up your number.
Any other devices on your network?

 

[africsnail]

Where did you get the Windows driver for the Intel I219V controller? Also want to make sure Windows update isn't running, as that can mess up your number.
Any other devices on your network?

I got it from the Asus support site for my MoBo.

 

[Ketchup79]

Cool. If you are running software affecting your network speed, such as ROG Game First software , or other devices on your network slowing you down, you might try getting a newer driver from the Intel website. They almost always have a newer network driver.

 

[africsnail]

Cool. If you are running software affecting your network speed, such as ROG Game First software , or other devices on your network slowing you down, you might try getting a newer driver from the Intel website. They almost always have a newer network driver.

Using, newest driver. Same thing happens if I am home alone.
On other PCs this problem doesn't occur

 

[Ketchup79]

What do these other PCs have (as far as a network card)? What OS are they running?

 

[africsnail]

What do these other PCs have (as far as a network card)? What OS are they running?

The best thing is that the very same PC I have the issue on works perfectly while dualbooting to Linux.
Other PCs are tried all run Windows 10

 

[africsnail]

Do you have the ROG Game First software loaded? That can limit your download speeds.

No, I don't

 

[Ketchup79]

The best thing about Windows is all the things it can do, mainly in the background. If you are a big torrent downloader, this is also the worst thing about Windows. The reason for the slowness could be any number of things, such as Onedrive, Windows Update, auto driver updates, AV update, and tons of different apps I haven't mentioned. Many flavors of Linux don't run such tasks because they don't come with them, or because the software causing the slowness on the Windows system isn't Linux-supported.

Since you know the machine itself supports the speed (via Linux), I don't know of any easy way to tell you what might be causing the slowness in Windows (barring taking it to someone who can actuly look at the system).

 

[africsnail]

The best thing about Windows is all the things it can do, mainly in the background. If you are a big torrent downloader, this is also the worst thing about Windows. The reason for the slowness could be any number of things, such as Onedrive, Windows Update, auto driver updates, AV update, and tons of different apps I haven't mentioned. Many flavors of Linux don't run such tasks because they don't come with them, or because the software causing the slowness on the Windows system isn't Linux-supported.

Since you know the machine itself supports the speed (via Linux), I don't know of any easy way to tell you what might be causing the slowness in Windows (barring taking it to someone who can actuly look at the system).

OK, but if it's due to some program running in background, then I would see it in the task manager under network usage, where I don't see anything. Right?

 

[africsnail]

[SOLUTION]
I found how to fix this problem. It has something to do with Windows config, registers and stuff.
I don't know much about this, but I found a application that fixed this for me.
TCP optimizer - And I selected Windows defaults, now it's working like a charm. 500mb/s
https://www.speedguide.net/downloads.php

 

[Dizzy49]

I had the exact same issue with my Gigabyte Z270X-UD3 mobo. The problem is with the Intel I219V controller.
I can confirm that the TCP Optimizer fixed the issue.