How to verify fix for Windows 10 KB5001330 performance issues

Over the past few weeks, there have been reports of Windows 10
encountering moderate to severe performance issues after
applying KB5001330. Affected users have reported various
issues, which includes system lag, FPS drop and stuttering when
playing certain games.

Windows 10 KB5001330 issues were first reported on April 13.
Since then, there have been reports on Reddit, Twitter, YouTube
and other social media sites about issues that focus on FPS
drop and performance issues when playing games. The most
prominent, and the understandably frustrating problem is
momentarily delayed player actions.

In some cases, users observed that the FPS drops to zero.
Within that period, the game is frozen with controls not
working smoothly. The issue is absolutely unacceptable and many
impacted Windows 10 users documented the problem on various
social media platforms.

In response, Microsoft said that it has launched its own
investigation and their findings suggest “only a small subset
of users” are affected. While this is not a widespread issue,

Microsoft has rolled out a server-side emergency patch.

How to fix Windows 10 KB5001330 issues

Based on early findings, it looks like the problem was the
result of a bad code/feature added to Windows 10, which was
disabled recently via a server-side update known as “Known
issue rollback”.

The immediate solution to this problem involves checking for
updates in the Settings app and restarting the device. If the
fix has been applied, you will no longer face performance and
gaming issues.

The problem with the “Known Issue Rollback” approach is that
users cannot easily verify if the server-side fix has been
applied to their device. Fortunately, using a simple PowerShell
script, you can scan Windows Registry and verify the hotfix
manually.

To verify fix for KB5001330 issues, use these steps:

  1. Open Windows PowerShell from Search.
  2. Enter the following command
          Get-ItemProperty -Path HKLM:SYSTEMCurrentControlSetControlFeatureManagementOverrides41837593227

When you enter the above command, you should see the
information of a registry key in the PowerShell window. If you
get the message “Path not found”, then the fix is not applied.

If the Registry key exists, the output will look like this:

Fix KB5001330

If the Registry key is present and Microsoft’s hotfix does not
work for whatever reason, another course of action is
removing the Windows Update manually using DISM or WSUS
command-line tools.

These instructions are valid for all versions of Windows 10.

If you’re unable to uninstall the update and suggested
workarounds do not work, you can use Media Creation Tool to
reinstall the operating system without removing personal files
and apps.

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