AMD working on patch to resolve Windows 11 performance issues

Windows 11 was released earlier this week but it appears the new operating system doesn't play well with AMD processors. Enthusiasts and tech sites discovered Windows 11 results in a considerable performance hit on AMD Ryzen processors. In several video games, the performance loss is as high as 10-15 percent.

Via a a new support page, AMD acknowledged the issue. The chip designer is working on a fix to resolve Windows 11 performance issues. The patch is expected to be out later this month.

AMD identified two issues:

Measured and functional L3 cache latency may increase by ~3X.

• Applications sensitive to memory subsystem access time may be impacted.
• Expected performance impact of 3-5% in affected applications, 10-15% outliers possible in games commonly used for eSports.
• A Windows update is in development to address this issue with expected availability in October of 2021.

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.
• A software update is in development to address this issue with expected availability in October of 2021.