Windows® 11 Performance Variation in Certain Applications on Compatible AMD Processors

Known Performance Changes

Impact 

Resolution

• Applications sensitive to memory subsystem access time may be impacted.
• Estimated performance impact of <3-5% in affected applications, with possible outliers in some games.

• A Windows 11 software update is now available to address this issue under Microsoft Knowledgebase ID 5006746.
• More information on downloading and installing this update can be obtained under Microsoft article KB5006746.
• Systems with this update applied will enumerate KB5006746 in the Control Panel > Programs > Programs and Features > Installed Updates interface.

Issue 2: UEFI CPPC2 (“preferred core”) may not preferentially schedule threads on a processor’s fastest core.

• Applications sensitive to the performance of one or a few CPU threads may exhibit reduced performance.
• Performance impact may be more detectable in >8-core processors above 65W TDP. 

• An AMD Chipset Driver package is now available to address this issue under version 3.10.08.506.
• Systems with this update applied will report AMD Chipset Software 3.10.08.506 (or newer) within the Apps & Features interface of Windows 11.

• In addition:
   

  • For AMD processors with the “Zen 3” architecture: Systems configured with AMD Chipset Driver 3.10.08.506 (or newer) should report version 7.0.3.5 (or newer) for the AMD.Power.Processor.Settings entry in the Windows 11 Provisioning Packages interface.
  • For AMD processors with the “Zen+” or “Zen 2” architectures: Systems configured with AMD Chipset Driver 3.10.08.506 (or newer) should have the AMD Ryzen™ Balanced power plan selected and active in the Control Panel > Power Options interface.