Windows 10: Internet speed slow after Windows update

Robyn Murning · May 8, 2025 at 8:22 AM

Since updating my PC over the weekend, my internet speed has plummeted. I reach 600ish mbps download on other devices, but only around 15 mbps on my PC. This is the case on both wifi and ethernet. The LAN port is Realtek 2.5Gb. The ethernet cable is a shielded CAT6 cable that is capable of 1000Mbit. It's also fairly new, and works just fine with my laptop.I have already tried the following:Command prompt: Running netsh int ip reset, netsh winsock reset, ipconfig /release, ipconfig /renew. and ipconfig /flushdnsDevice manager: updating drivers internet drivers were up to date, but I updated my

:)

Remon Ont · May 8, 2025 at 8:23 AM

Slow Internet speed on only one computer.

Hi Cody,

Slow internet speed on one of your computer could be due to the following:

Outdated network adapter driver

Different Wi-Fi chipset

Computer processing speed

Make sure that the network driver of your computer(s) are always updated.

We also suggest you to contact your internet service provider for them to check your internet connection speed and give you more information.

Feel free to post back if you have other concerns.

Vanessa Yar · May 8, 2025 at 8:23 AM

Asus N580VD slow internet speed

Hi Blair,

There are several factors that affect your internet speed. A few would be connection speed, network traffic, hardware capability, and type of connection. To help us identify what might be causing the slow internet speed on your laptop, allow me to ask the
following information:

How's your laptop connected to the network? Is it directly wired to the modem/router or wirelessly connected?

Were your other computers that were getting 100 Mbps download speed connected to the same network?

Were there other devices connected to the network while you tried to download?

Have you tried connecting your laptop to a different network? Did you get the same internet speed?

In the meantime, please run a speed test on your laptop. If the internet speed is slower that your internet package, then you may try to update the drivers of your network adapters to ensure that it's up-to-date. Please check out and follow the steps provided
on this link: Update drivers in Windows 10.

If you're trying to download while your laptop is wirelessly connected to your network, then kindly check its wireless adapter speed by checking its Wireless Network Connection Status. Follow these steps:

Right-click the wireless icon on your system tray, click Open Network & Internet settings, then click
Wi-Fi.

On the right pane, click Change adapter options.

Right-click your Wireless Network Connection and click
Status.

Please take a screenshot of the status page and kindly include it on your reply.

Looking forward to hear from you.

Regards.

Eric003 · May 8, 2025 at 8:23 AM

Slow Internet Speed on Windows 10 1809

Hi,

My name is Angel. I am an Independent Advisor. Thank you for posting in Microsoft Community.

1. Close the Peer to Peer Update Process on Your PC to Fix Slow Internet after Windows 10 Update

Shut down the peer to peer update process on your PC. That is to say, you need to close the channel which you can download applications and system updates from other PC’s connected to the server since it limits your internet bandwidth seeding to other users.

Step 1. Click Start menu and then type Settings to open it.

Step 2. Select “Update and Security“.

Step 3. Click the “Advanced Options” tab.

Step 4. Click the option “Choose How Updates are Delivered".

Step 5. Turn off the On button.

2. Adjust the Internet Bandwidth Settings

Since windows 10, by default, reserves 20% of the internet bandwidth for the system applications and its operating system, you can’t browse or surf on the internet with 100% internet connection. This solution speeds up the dropping internet speed by trimming
down the bandwidth which is reserved for Windows 10 and system applications. Follow the step-by-step guide to tackle slow internet after Windows 10 Update.

Step 1. Press Windows shortcut keys Win + R to open Run dialog box.

Step 2. Type gpedit.msc and then hit OK.

Step 3. Give permissions. A pop-up window will open with title of Group Policy.

Step 4. Click on Computer Configuration on the right side of the window.

Step 5. Navigate to: Administrative Templates -> Network – > Qos Packet Scheduler – > Limit reservable bandwidth.

Step 6. Click on Enable.

Step 7. Change the Value from 20 to 0.

Step 8. Apply and then click OK.

3. Disable Window Auto-Tuning

Window Auto-Tuning which is enabled by default improves performance for programs by receiving TCP data over a network. Slower internet speed after Windows 10 Update could hit your computer when Window Auto-Tuning feature is “ON”. While luckily, you can disable
Windows Auto-Tuning level to improve the internet speed for the Windows 10 update. Use administrator privileges to process the following steps.

Step 1. Press Win + X and then select Command Prompt (Admin).

Step 2. Type the command netsh interface tcp show global in the window.

Step 3. Check for Receive Window Auto-Tuning Level and if it is normal, you will need to disable it.

Step 4. Type the command netsh int tcp set global autotuninglevel=disabled to disable it.

You can perform an internet speed test to see whether those adjustments improve your internet speed or not. If not, you can re-enable the Window Auto-Tuning level by typing the command netsh int tcp set global autotuninglevel=normal in the Command Prompt (Admin).

Source:

https://www.drivethelife.com/windows-10/fix-slo...

Hope the information provided is useful. If the issue persists, reply here and we will be glad to help you.

Angel.

Note: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised
on the site before you decide to download and install it.
Click to expand...

I tried this last night and now my laptop is worse. Your first suggestion "choose how updates are delivered" isn't even an option. Hopefully the 1908 update will fix this problem that microsoft caused. Sadly my internet connection keeps disappearing so downloading
and installing that update isn't really working. Microsoft and their mistake is pointing me towards having to pay someone to come in and fix it. Not happy with Mr Gates right now.

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