Windows 10: Ethernet speed very slow overnight on my PC

My computer download and upload speeds are sitting at around 1 mbps when my connection is 50mbps on all other devices. I’m trying to update my network drivers yet I don’t know which one to download for windows 10 pro. I currently have the intel R 1211 gigabit network connection - driver version 12.18.11.1 It was released in 2020 so I’m assuming it’s old. Which driver do I download? Is it my Ethernet cable that’s the problem?

:)

 

Slow Download Speed

Hi,

Thank you for posting your query in Microsoft forums.

• I would suggest you to test the speed using any of the speed test website or app to confirm the upload and download speed.
• I also suggest you to reset the wireless router to check if that helps.
  
• You may plug in the Ethernet cable if available and check the speed.
  

Hope the information is helpful. Feel free to write to us for any other assistance with Windows, we’ll be glad to assist you

 

Ethernet internet speed is slow

Hi JadenLay and thanks for reaching out. My name is Joseph. I'm an independent advisor. I'll be happy to help you out today.

I would suggest you refer to the below steps and check if it helps to resolve the issue.

Solution 1. Refresh Network.

1. Open CMD as an administrator mode.

2. Type in the following,

ipconfig /release <Press Enter>

ipconfig /renew <Press Enter>

ipconfig /flushdns <Press Enter>

ipconfig /registerdns <Press Enter>

nbtstat -rr <Press Enter>

netsh int ip reset all <Press Enter>

netsh winsock reset <Press Enter>

3. Check to see whether or not the problem has been resolved.

Solution 2. Disable Large Send Offload (LSO).

If you’re experiencing slow LAN speed on your Windows 10 PC, the issue might be a Large Send Offload feature. In order to solve the problem, you just need to disable this feature by doing the following:

1. Press Windows Key + X and choose Device Manager from the list.

2. Double-click on your Network Card and click on the Advanced tab.

3. Select Large Send Offload V2 (IPv4) and set the value to Disabled.

4. Do the same for Large Send Offload V2 (IPv6).

5. Click OK.

Solution 3. Change your DNS settings

If you’re having issues with slow LAN speed, the problem might be your DNS.

This issue is usually related to your ISP and its DNS, but you can always change your DNS. This process is relatively simple, and you can do it by following these steps:

1. Type Network and Sharing Center. Select the first result.

2. Go to Change adapter settings, right-click the Ethernet network interface, and select Properties

3. Select Internet Protocol Version 4 (TCP/IPv4) and go to Properties.

4. Select the “Use the following DNS server addresses” option and type your preferred and alternate DNS addresses.

5. You can use Google’s Public DNS addresses 8.8.8.8 and 8.8.4.4, OpenDNS addresses 208.67.222.222 and 208.67.220.220 or other DNS addresses.

6. Check to see whether or not the problem has been resolved.

Source:
https://windowsreport.com/fix-slow-lan-speed-pc/

I hope this helps. Feel free to ask back any questions and let me know how it goes.

Thank you!

Standard Disclaimer: There are links to non-Microsoft websites. The pages appear to be providing accurate, safe information. Watch out for ads on the sites that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly
research any product advertised on the sites before you decide to download and install it.

 

Network speeds drastically reduced overnight.


Issue:Overnight my download speeds have dropped drastically on this PC. Other devices show typical speeds of 65 Mbps down and 10 Mbps up. This PC is showing roughly 5-7 Mbps down and 10 Mbps up on 5 GHz network and around 25 down and 10 up on my 2.4 GHz network. This is consistent over multiple tests and browsers of course.

Info:

• Windows 10-1511 Build 10586.164
• No firewall/AV enabled (Windows Defender disabled in GPEdit.)
• Linksys WMP600N Wireless adapter (802.11 b/g/n Dual band).
• D-Link DIR-850L router (802.11b/g/n/ac Dual band).

What I've tried/checked so far:

• Malwarebytes turns up nothing on full system scan.
• Task Manager / Resource Monitor shows nothing is using network out of the ordinary.
• Tried 4 different WLAN driver versions with the same results no matter which is installed.
• Ran TCP/IP stack reset (netsh i i r r).
• Reset winsocks (netsh winsock reset).
• Flushed DNS.
• Restarted PC.
• Powercycled router/modem.

Attempting Ethernet would be extremely challenging and I'm 99% certain this is specific to the WLAN adapter. Any suggestions or ideas would be greatly appreciated.