Optimize Windows 11 2023: Fix CPU Performance Decrease

Following the recent release of the Windows 11 2023 update by Microsoft, numerous users eagerly opted for the upgrade. However, an unforeseen issue emerged, notably affecting gaming performance on various systems.

1. Identifying the Performance Decline

A user, in a different region, encountered a substantial decline of approximately 8% in gaming performance after transitioning from Windows 11 to Windows 11 2023. This setback prompted the user to report the issue to Microsoft, seeking a resolution.

2. Analyzing the Performance Impact

The user meticulously conducted performance tests on an AMD 5800X3D-based computer both pre and post-upgrade. Despite a fresh OS installation, a conspicuous reduction in CPU performance was observed across single-threaded and multi-threaded tasks, consistently showcasing a performance slowdown ranging between 5-8%.

3. Widespread Impact Across CPU Types

Initially perceived as a problem limited to AMD Ryzen CPUs, reports on Microsoft’s official platform revealed similar complaints from users utilizing Intel’s 13th-generation CPUs.

4. Microsoft’s Solution and Resolution Steps for Windows 11

Microsoft promptly responded to these grievances, presenting a solution pathway to alleviate the issue. The provided solution comprised a set of steps:

• Command Execution in PowerShell

Open PowerShell in administrator mode and execute the following commands:

1. Set-ExecutionPolicy Unrestricted
2. Get-AppxPackage Microsoft.SecHealthUI -AllUsers | Reset-AppxPackage

• System Configuration in BIOS

Restart and ensure CPU virtualization is enabled in BIOS settings.

• Windows Security Center Configuration

Access the Windows Security Center app within the ‘Settings’ menu and ensure the ‘Memory Integrity’ option is activated under ‘Core Isolation.’ Subsequently, restart the system.

5. Post-Solution Outcome

Upon implementing Microsoft’s recommended solution, the user reported a substantial restoration of gaming benchmark tests, reverting to levels akin to those observed in Windows 11 22H2. Encouragingly, in certain instances, GPU benchmark performance even showcased improvements beyond previous standards.

6. Final Recommendations

In case users encounter CPU speed-related issues following the upgrade to Windows 11 2023, attempting the outlined steps could potentially resolve these problems. Microsoft’s proactive approach and structured solution provide a promising avenue for affected users to restore and enhance their system’s performance.