General Random Write disk speed degradation in Windows 11.

Anonymous
2021-08-23T04:42:53+00:00

After updating several machines from Windows 10 to Windows 11 users have noticed a significant degradation on Disk Random Write speed. This is quite noticeable with NVMe SSDs benchmarks, it also seems to affect SATA SSDs even if it is not as significant. See 3 samples below with 3 different devices on Windows 10 and Windows 11:

Windows 10 19043.1165 NVMe SSD SK Hynix:

Windows 11 22000.160 NVMe SSD SK Hynix:

Windows 10 19043.1165 SATA SSD ADATA SU800:

Windows 11 22000.160 SATA SSD ADATA SU800:

Windows 10 19043.1165 Samsung NVMe SSD MZVLW:

Windows 11 22000.160 Samsung NVMe SSD MZVLW:

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  1. Anonymous
    2021-12-14T22:25:20+00:00

    I don't think today's update was meant to address any NVMe SSD issues (no mention in the notes I read). Hopefully some will be coming down the road though.

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  2. Anonymous
    2021-12-14T22:18:14+00:00

    After the last update ((KB5008215), the situation is exactly the same. Very sorry to have upgraded from win10 to Win11 :(

    I hope you kept a backup of you Windows 10? 😉

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  3. Anonymous
    2021-12-14T22:11:11+00:00

    After the last update ((KB5008215), the situation is exactly the same. Very sorry to have upgraded from win10 to Win11 :(

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  4. Anonymous
    2021-12-09T17:31:19+00:00

    I have the same problem. Absurdly slow :(

    ASUS VivoBook S

    CPU: Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz 1.99 GHz

    RAM: 16,0 GB (15,9 GB utilizável)

    Windows 11 Pro 21H2

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  5. Anonymous
    2021-12-04T14:51:32+00:00

    So I wonder if it makes sense to break up by 2 TB SSD Disk into a windows partition and then a separate data partition (right now I just have one big undivided disk)? But then I'll have to rebuild everything. Nah -- too much work. Hopefully MS will fix this.

    Also, I wonder if most review sites test these drives where windows is not installed on it? Which bumps up the numbers.

    Another thing is -- is this purely a Windows 11 issue. In other words, if Windows 10 was the SSD drive, was performance degraded? Or only in Windows 11?

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