Windows 11 only has 45% of random write speed in Nvme SSD

Question

As you see above, the other performance is about the same, but in RND 4K Q32 T16 the speed has dropped significantly. I know that because the two software versions are different and the condition of the computer is different, it is normal for the performance to fluctuate, but this performance also dropped too much, and the performance remained stable low after many tests at different times.

Answer 1

This update does not solve the issue.

Answer 2

That article is referencing the Journaling issue, the hotfix doesnt completely address the random write performance of nvme drives. The only drives that perform at spec for me are drives that use their own drivers like Intel Optane.

Answer 3

The media says so at least...

Microsoft admits another Windows 11 bug is slowing down PCs (storage drives) (windowslatest.com)

According to sources familiar with the development, Microsoft is actively investigating the issue and a fix is already available via Windows Update. However, the patch is currently optional.

Answer 4

The preview update has the fix for it.

November 22, 2021—KB5007262 (OS Build 22000.348) Preview (microsoft.com)

• Addresses an issue that affects the performance of all disks (NVMe, SSD, hardisk) on Windows 11 by performing unnecessary actions each time a write operation occurs. This issue occurs only when the NTFS USN journal is enabled.  Note, the USN journal is always enabled on the C: disk.

Answer 5

although my pc is unsupported, (threadripper 1950x), i must say i am having this exact same issue on my system. otherwise, its been smooth sailing all the way.