The 22H2 update may result in "lower than expected performance" or stuttering in games.
Windows 11

In early October, Microsoft publicly released the 22H2 update for Windows 11. This update brought several new features to the operating system, the return of several features common to Windows that were common in older versions, and several bug fixes. Unfortunately for those that play video games, which is probably you if you're reading this, it also introduced several performance issues.

First off, Nvidia owners that performance in games was severely degraded following the update. Framerates were way down, there was apparently lag, and users' CPUs were being woefully underutilized. Nvidia discovered the issue and first issued a beta update for the GeForce Experience that addressed the issue. This update was then rolled out to the public, so if you're on GeForce Experience 3.26.x you should have the fix already.

The problems do not end there. While Nvidia has done what they could on their end, there are still issues for PC gamers. These issues are not limited to those with Nvidia hardware either as it impacts hardware configurations from all vendors. Microsoft lists "lower than expected performance in some games" at the top of their known issues list for Windows 11 22H2.

Microsoft says that there is a software bug in the 22H2 update that causes games and apps relying on the GPU to trigger a developer debug feature. This debug feature was obviously never meant to be used, seen, or accessed by consumers. It's this debug feature that is causing the performance degradation for end users that updated to 22H2.

Due to this issue, Microsoft has temporarily halted the continued roll out of Windows 11 22H2. If you have not yet updated to 22H2 yet, it will not be pushed to you via Windows Update until Microsoft is confident the issue is resolved. Microsoft also warns against using the Media Creation Tool or the Update Now button in Windows Update to bypass this Windows Update safeguard.

If you have already updated to Windows 11 22H2, Microsoft suggests ensuring your games and other apps are up to date. Frankly speaking, this sounds like a really dumb solution given that the issue seems to originate from within the operating system itself. If it's still possible for you to roll back to a prior version of Windows 11, that would be even better. The best course of action would be to just go back to Windows 10 if that's an option for you. Windows 11 in general still needs a while longer in the oven.

Microsoft says that they are "working on a resolution and will provide an update in an upcoming release." A release date for this potential fix was not provided by Microsoft.