Windows 11 CPU usage reporting apparently has issues, including on Task Manager

While not every user is actively monitoring hardware resource usage when playing games, enthusiasts and reviewers often turn on statistics to see how the hardware handles certain games and Other applications.

In one such test run, CapFrameX, which develops useful frame time analysis tools, discovered when measuring Ryzen 7 5800X3D performance in Lara Croft Shadow on Tomb Raider (SotTR) A strange anomaly occurred.

The reported processor usage on Windows 11 appears to be unusually low during a scene in the game, which is generally considered to be very CPU intensive. Only one of the 16 threads appears to be reporting correct usage, while all other threads have utilization below 10%.

CapFrameX is aware of this issue, but not sure what causes it:

Core usage reporting on Window 11 is completely broken. For this particular scenario and setup of SotTR, it should be >80%.

what happened? Has the recent update changed the timer's behavior?

This is a screenshot of the relevant scene. The statistics are displayed on the screen using CapFrameX's own tool, alongside a snapshot of HWiNFO showing similar data.

While the bug noted here may be an application-specific issue, CapFrameX maintains that it exists in all games tested:

It is worth noting that CapFrameX and possibly HWiNFO are also based on the Event Tracing for Windows (ETW) tracing mechanism. Therefore, there may be some kind of bug in ETW that causes this misreading.

A quick search on Google led us to a forum on Microsoft where user "AndreasRes" reported a somewhat similar issue. In this case, we noticed that Task Manager usage was very high or at 100%, while Xbox Game Bar and MSI Dragon Center usage was much lower.

Task Manager and Xbox Game Bar CPU usage side by side

While the topic was opened last year, more users have recently joined in 2022.

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Update: We contacted CapFrameX earlier about a Windows 11 build that was showing reports of low CPU usage. We received the following response confirming testing with the recent Windows 11 Beta Channel build 22621:

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