Windows 11 Bug Slows Down Ryzen CPU Performance by up to 15%
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According to AMD, Windows 11 bug slows down Ryzen CPU performance by up to 15%. Users are warned not to install the brand new Windows 11 operating system on their AMD machines.

In information published by AMD, a couple of bugs can reduce performance for Ryzen processors running Windows 11 by up to 15 %. Though the amount of slowdown each user experiences may vary depending on the CPU you are using and what you’re doing on it. AMD is confident of the bugs being fixed later this month.

In the published report AMD mentioned an issue that increases L3 cache latency by up to three times. This leads to affecting apps relying on fast memory performance.

AMD said it will slow down most of the apps by 3 to 5 %, but some while “games commonly used for eSports” could see dips of between 10 and 15 percent.

AMD further said Windows will fix the issue later this month with an update and advised users to keep checking for installing Windows updates regularly to resolve the issue.

While the second bug affects the AMD processor feature which tries to use the fastest individual CPU cores when running lightly threaded tasks rather than treating all cores the same. AMD has vaguely said the problem may be more detectable in processors with eight or more cores and a 65 W or higher TDP without putting numbers. The bug may affect most 2000, 3000, 4000, and 5000-series Ryzen 7 and Ryzen 9 desktop CPUs and APUs.

According to AMD a “software update,” not a Windows update, will be released to fix the problem later in October. AMD users will require to install new AMD chipset drivers or some other software to get the fix.

We would also like to mention the AMD Ryzen issues are different from the performance slowdowns caused by some of Windows’ virtualization-based security features.

According to testing by outlets like Tom’s Hardware the Memory Integrity security feature can reduce performance by a few percentage points in some games and general computing tasks. These results vary widely based on the software you’re using and the processor you have. This feature is available on both Windows 10 and Windows 11, though it is disabled by default in both operating systems for all but the most recent laptops and desktops sold by major PC makers.

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