Fix: Slow Internet After Windows 10 Creators Update

I noticed my internet speed to be very slow especially when browsing and even downloading a few kilobytes file took several minutes to complete. That was after I installed Windows 10 creators update.

Microsoft introduced the feature called Window Auto-Tuning in Windows 10 which basically improves the performance of the apps in the Windows store or programs that receive TCP data over a network and is enabled by default.

In my case, I am experiencing slower Internet speed than usual data transfer speeds and connectivity issues.

I tried googling for possible solutions to help me resolve the issue and found several tutorials showing the same steps on how to manage Window Auto-Tuning in Windows 10.

Managing Window Auto-Tuning in Windows 10

First, I checked if I do have auto-tuning enabled by default by doing the following.

  • Right click on the Start menu icon on the lower left of the screen and click Windows PowerShell (Admin). That launches a Windows PowerShell with elevated privileges that is needed to update the TCP parameters.
  • Type netsh interface tcp show global and hit enter.
  • The command above yields an output shown below.

Window Auto-Tuning Slow Internet Windows 10 Creators Update

I confirmed that auto-tuning has been enabled by default in my PC to optimize TCP connections. Unlike other screenshots provided from other sites, I got a warning message at the end of the TCP Global parameters saying “** The above autotuninglevel setting is the result of Group Policy overriding
any local configuration.”

Then, I still tried running the following command which I got an “Ok” response.

netsh int tcp set global autotuninglevel=disabled

To verify if I successfully updated the status of the auto-tuning parameter I typed the command again specified in the first step to view the TCP Global Parameters state as you can see below.

Manage Window Auto-Tuning Slow Internet Windows 10 Creators Update

I wondered why the value was not updated. I tried running the command again and again to disable auto-tuning but nothing happened.

I found an old thread in Microsoft’s forum site about TCP auto-tuning level. The solutions provided by the experts there didn’t really help me in my case.

The warning message is clear that there is really a Group Policy configuration that overrides the auto-tuning level parameter.

Fix the conflict in Local Group Policy Editor

According to DriveTheLife, improper QoS settings can also result in the slow Internet after Windows 10 Creators Update or the Windows 10 Fall Creators Update. So I opened my Local Group Policy Editor to make some changes.

Step 1. Use Windows shortcut keys Win + R to launch Run.

Step 2. Type gpedit.msc into the box.

Step 3. Hit the Enter key.

Step 4. On the left side, expand the Computer Configuration.

Step 5. Click Windows Settings.

Step 6. On the right side, right-click the Policy-based QoS.

Step 7. Select Advanced QoS settings.

Step 8. Choose the Inbound TPC Traffic tab.

Step 9. Un-Check the Specify the inbound TPC throughput level.

Step 10. Choose Level 3 (maximum throughput) and click OK.

Fix Slow Internet Windows 10 Local Group Policy QoS

The issue in my case is that the “Specify the inbound TCP throughput level” setting has been checked which is causing the conflict and is overriding the auto-tuning feature in TCP Global parameters.

When I checked the status again, auto-tuning has successfully been disabled as shown in the image below.

Manage Window Auto-Tuning Slow Internet Windows 10

After I’ve successfully disabled auto-tuning, I can already feel an increase in my Internet browsing speed and downloads now instantly completes in few seconds.

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