Windows 11 slows down Ryzen processors - Performance reduction up to 15%

Following the release of Windows 11, many users decided to install a new system right away, rather than waiting for the first reports of major errors. Microsoft's latest Windows 11 operating system has shown to be risky for AMD-based machines. In a number of apps, installing this operating system affects performance by 15%. There were also a lot of AMD Ryzen processor users among them, and updating to the latest version turned out to be a bad idea. It turns out that a serious error has been discovered, resulting in a considerable reduction in performance of up to 15%. It appears that the CPPC2 function is malfunctioning.

Side note: technically, when any new update comes along, it's advised to wait a little until installing it. It gives the developers some time to work on certain errors. Vere often it's like a PlayAmo casino - you never know what to expect and you don't want to disrupt everything you have now, so patience is the key here.

AMD and Microsoft have both claimed that problems affecting chip performance in apps have been identified. The first is the management of the L3 processor cache memory, which has been tripled in access time. As a result, programs that place a high demand on the memory subsystem may perform less effectively than before. According to the announcement, most cases will result in a 3-5 percent drop in output, but in some cases, such as esports games, it may be able to lower production by as much as 10-15 percent.

Another Error

A bug was also discovered in the CPPC2 function (commonly known as "preferred core"), which prevented preferred threads from being scheduled for the fastest processor core. As a result, programs that rely on a single core's performance suffer a performance hit. The variations are especially noticeable for chips with at least eight cores and a TDP of more than 65 watts, according to AMD.

The performance decrease is particularly obvious in programs that are dependent on the performance of one or more CPU threads in this circumstance. This issue may be most noticeable on processors with eight or more cores and a TDP of 65W or above, according to AMD. This definition encompasses the Ryazan 7 and Risen 9 series 2000, 3000, 4000, and 5000 desktop processors and APUs.

The most significant thing, in the eyes of the users and consumers, is that bugs will be fixed very soon. In October 2021, AMD and Microsoft announced the patch's availability. It's worth mentioning that a "software update," not a simple Windows update, will be provided to fix the second bug, meaning customers may need to install new chipset drivers or other software to acquire a patch. To work around the problems, AMD advises customers to stick with a supported version of Windows 10 until the necessary patches are issued. That brings us to the initial point: whenever a new update is released, don't rush into installing it, you may come across some unpleasant surprises.