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Re:A Look into CBL-Mariner, Microsoft’s Internal Linux Distr... by trevorishere on Monday July 12, 2021 @12:41AM (#27807110)
That'll be due to the file system filter driver[s] (i.e. antivirus). This should impact most/all file systems where the file system filter driver supports said file system.

Disable/remove the file system filter drivers and the performance issues largely disappear.

Re:A Look into CBL-Mariner, Microsoft’s Internal Linux Distr... by marmaduke on Monday July 12, 2021 @01:32AM (#27807357)
On current pro versions, you can’t really disable the live protection constantly, but you can add a permanent exclusion for your home folder or the whole drive. This should greatly speed up operations like that. Still a lot faster to do them inside a Docker container/volume on the same Windows host.