Microsoft acknowledges slow NVMe SSD write speeds in Windows 11 - working on a fix.

by Hilbert Hagedoorn on: 12/11/2021 12:33 PM | source: support.microsoft.com | 23 comment(s)

Windows 11 has had a bug for a long time that slows down the write speed of hard drives and SSDs. Microsoft is releasing a fix for the problem under patch KB5007262.

Recent tests by Reddit user PleasedPen25317 showed that the random write speeds of the Samsung 980 Pro SSD went down a lot when Windows 11 was installed on any partition that had the SSD. It must have been more widespread than previously thought because the problem affects all drives, not just NVMe SSDs, which are very, very fast.

November 22, 2021—KB5007262 (OS Build 22000.348) Preview -

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.

Read more about it here, a whole lot more has or will be fixed.

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itpro
Senior Member

Posts: 1361
Joined: 2020-02-20

#5972194 Posted on: 12/11/2021 01:12 PM

Finally. I thought it was my idea all along.

darah
Junior Member

Posts: 18
Joined: 2021-10-12

#5972254 Posted on: 12/11/2021 05:07 PM

I have that KB5007262 update installed since nov 25, but my 980 pro random and sequential didnt change since win11 fresh install, random writes are still lower than my gen3 secondary drive. Sequential has been fine tho, works as advertised since win11 release.

shadex
Senior Member

Posts: 673
Joined: 2008-08-19

#5972257 Posted on: 12/11/2021 05:20 PM

So this issue is addressed on .348?

Bleib
Senior Member

Posts: 374
Joined: 2013-08-19

#5972263 Posted on: 12/11/2021 05:42 PM

Win11 with supposed enhanced direct storage capacity vs win10..

Alessio1989
Senior Member

Posts: 2299
Joined: 2015-06-11

#5972273 Posted on: 12/11/2021 07:00 PM

So, so far windows 11 is useless tpm and cpu requirements for defender, internet connectivity requirement on installation, less features and crippled GUI, a still unfinished unified GUI, a lot of unreleased improvements, performance issues, final user setting issues, on multiple sides and a lot of missing features, while GOVs around the world are announcing they will not stay with Windows and upgrade to 11...And Nadella is still sitting as a CEO.

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