https://safirsoft.com Tuesday's first Windows 11 patch slows AMD processors more than the original version

Hot Potato: With Intel Alder Lake landing in the coming weeks, Microsoft may be spending a lot of time optimizing Windows 11 for hybrid CPU architectures that combine core and performance cores. This resulted in a weak optimization of AMD processors in the release version, which seems to get worse with each update. Fortunately, repairs are scheduled for another week.

Yesterday, Microsoft released the first Tuesday Patch update for Windows 11, which brought a number of tweaks to the new operating system. More importantly, it fixes compatibility issues between some Intel "Killer" and "SmartByte" network software and Windows 11, where users are seeing network outages and slowdowns.

The company says in its release notes that there were no known issues with the update, but it didn't take long for someone based on extensive feedback in the Feedback Center and known issues. In the release version of Windows 11, he found one. It appears that Microsoft has exacerbated the recent performance issues of its Ryzen CPUs, just as AMD is preparing to solve one of them. AMD processors are up to 15% on some workloads such as eSports games and single-threaded applications. The folks at TechPowerUP were curious enough to run AIDA64 Cache & Memory Benchmark and see if anything improved after this first update. What they found is that the Ryzen 7 2700X L3 CPU latency, which is around 10-11 ns in Windows 10, increased to 17 ns in the Windows 11 release version and is now around 32-34 ns after the first monthly patch. >

We were able to verify these results on a machine with a similar CPU model. Both AMD and Microsoft have announced that the fixes for the problem, as well as the CPPC (Preferred Core) bug, will be released later this month, and after some revision, it looks like they'll arrive on October 19 and October 21, respectively.

If you recently upgraded to a Windows 11 PC from AMD, you should know that you have up to 10 days to go back to Windows 10 if you have performance issues. To do this, go to Settings -> System -> Recovery. You should see a "Back" button, which can be used to start the downgrade process. You may also want to check out our guide on how to disable VBS in Windows 11 to increase performance.

Tuesday's first Windows 11 patch slows AMD processors more than the original version
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