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Considerable speed difference between Bitlocker enabled / disabled on NVME GEN 4 1tb (and the rest of my, encrypted by bitlocker, drives - ssd/hdd) in Win 10.

Anonymous
2022-06-06T11:54:31+00:00

Considerable speed difference between Bitlocker Enabled and Disabled NVME GEN 4 1tb (and rest of my encrypted by bitlocker) ssd/hdd in Win 10.

Win 10 PRO 21H2 - 19044.1706 - Windows Feature Experience Pack 120.2212.4170.0 - fully update - clean install. Latest drivers.

MSI B550 Gaming Edge (AMI BIOS - 7C91v1A1 - 2022-05-24 - AGESA ComboAm4v2PI 1.2.0.7.) + 5600x +32 Gb 3600 cl14,

Sabrent Rocket NVMe 4.0 M.2 SSD 1tb (PS5016-E16 PCIe 4.0 x4 NVMe 1.3),

Western Digital WD2005FBYZ-01YCB HDD Gold 2 TB SATA 128 MB 3.5 Inch,

Toshiba DT01ACA200 2TB SATA 6Gb/s 7200rpm 3.5 Inch,

TOSHIBA NVME GEN 3 512 Gb RD400 m.2 ssd,

Bitlocker Enabled:

Bitlocker Disabled:

Situation very similar to : What would cause a considerable speed difference between Bitlocker enabled HDD's in Win 10 Pro 1909 (18363.1440) and Win 10 Pro 20H2 (19042.867).

Windows for home | Windows 10 | Files, folders, and storage

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  1. Anonymous
    2022-06-08T10:21:08+00:00

    Hi,

    Thanks for your post in Microsoft Community.

    I understand that you have encountered the problem of slow hard disk read and write speed after enabling Bitlocker.

    Enabling Bitlocker does affect the read and write speed of the hard drive, and the degree of this effect varies with the hard drive specification.

    Among them, Bitlocker may have a greater impact on the writing speed, and there is no good solution at present.

    Thanks for your patience and understanding!

    Kirk | Microsoft Community Support Specialist

    * Beware of scammers posting fake support numbers here.

    * If your problem is not solved, you could reply to the post again and we would continue to provide technical support for you.

    * Please check and vote this answer if it helps as it will be beneficial to more community members reading here.

    10+ people found this answer helpful.
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