Surface Studio: Slow performance during Bitlocker encryption

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Symptoms

When encrypting drive on Surface Studio using Bitlocker you may encounter slow performance in Windows while the drive is being encrypted

Note: To check status of the encryption run the following command at elevated cmd promptmanage-bde -status <osdriveletter>

In order to encrypt the drive, bitlocker must disable the Rapid Hybrid Drive cache in order to encrypt which adds additional time.

Note: The Rapid Hybrid Drive cache is re-enabled once bitlocker encryption is complete

This behavior is by design.

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