Major performance issue with the first Windows 11 update

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Key notes

  • The first patch Tuesday appears to have made a gaming performance issue in Windows 11.
  • It appears to be a latency issue that has an impact of up to 15% performance.
  • The issue is currently being addressed, and a patch is expected later this month.
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It seems the first Windows 11 update is off to a rocky start as users are reporting the fixes expected have worsened the situation. The October patch Tuesday earlier released was expected to address the gaming performance of AMD processors.

Double latency

According to TechPowerUp, PCs compatible with Ryzen CPUs are experiencing a performance snarl-up. The patch almost doubled the level 3 cache latency of a Ryzen 7 2700X. The L3 typically posts a latency of 10 ns, but after being tested, it was 17 ns. After the patch update, it posted a latency of 31.9 ns. 

The 17 ns latency was already bad, but the jump after the update made it worse. 

Good news

Users can hold on to their breath as there is apparently a fix on the way. Microsoft may release a patch to fix the L3 latency issue on October 19, while AMD takes care of the Windows 11 issue by releasing driver updates on October 21.

The dates are not yet confirmed, but AMD has assured users that both issues will be resolved before the end of October.

The earlier, the better

It is crucial that these issues are fixed in a timely manner as there is an upcoming launch for Intel Alder Lake processors. There are a lot of rumors on how they reportedly improve performance with Windows 11, so AMD might want to hurry up in addressing these issues lest they enter into a battle that could put them in a disadvantageous position.

If you have not yet installed the patch, you might want to hold off for a while until the issues are addressed next week.

Have you installed the October patch, and have you experienced these performance issues? Share your experience in the comment section below.