Noticed a big hit in random write performance benchmark under .132. Using Samsung 970 Evo Plus, the Random 4K Q32 T16 was 850MBs Write under Win 10, but with Win 11 .132 it's down to 200MBs Write. Also Random 4K Q1 T1 Write has dropped from 129 to 88. I tried different Power Settings options, but makes no difference.

always run more than 1 time ... you need to average times because there is a lot of variation each time you run.

It is not a region issue. It IS Controlled Rollouts, as usual. Cheers, Drew ![](https://learn-attachment.microsoft.com/api/attachments/8e404826-6e65-4bfb-b464-cb273728ad4c?platform=QnA

always run more than 1 time ... you need to average times because there is a lot of variation each time you run. Oh, I have, the highest the Random Write gets to is 220MBs. Far from the 850 it was getting. I think it is caused by the Driver: Microsoft Standard NVM Express Controller 10.0.22000.132

Hi FAUguy, I have a similar experience with the performance of the same SSD Samsung 970 Evo Plus M.2 1tb OS Drive. With Windows 10 21h1 : With Windows 11 but software run only once with different build of CrystalDiskMark : 👇 I probably should have ran it several times before posting the Windows 11 marks

CO-Release Build 22000.132 is out to Dev & Beta Channel

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Anonymous

2021-08-18T01:23:37+00:00

Noticed a big hit in random write performance benchmark under .132.

Using Samsung 970 Evo Plus, the Random 4K Q32 T16 was 850MBs Write under Win 10, but with Win 11 .132 it's down to 200MBs Write. Also Random 4K Q1 T1 Write has dropped from 129 to 88.

I tried different Power Settings options, but makes no difference.
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Anonymous

2021-08-18T01:26:51+00:00

always run more than 1 time ... you need to average times because there is a lot of variation each time you run.
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Drew - 810 Reputation points

2021-08-18T01:45:39+00:00

It is not a region issue. It IS Controlled Rollouts, as usual.

Cheers,
Drew![](https://learn-attachment.microsoft.com/api/attachments/8e404826-6e65-4bfb-b464-cb273728ad4c?platform=QnA
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Anonymous

2021-08-18T01:46:48+00:00

always run more than 1 time ... you need to average times because there is a lot of variation each time you run.

Oh, I have, the highest the Random Write gets to is 220MBs. Far from the 850 it was getting. I think it is caused by the Driver: Microsoft Standard NVM Express Controller 10.0.22000.132
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Anonymous

2021-08-18T03:28:33+00:00
Hi FAUguy,
```
       I have a similar experience with the performance of the same SSD Samsung 970 Evo Plus M.2 1tb OS Drive.
```
With Windows 10 21h1 :

With Windows 11 but software run only once with different build of CrystalDiskMark : 👇

I probably should have ran it several times before posting the Windows 11 marks
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