Comment by mike_hearn

Not much changed. The problems are pervasive and workarounds rule the day. MS has got more accepting of them though.

For example they can't make NTFS fast, and they can't seem to make ReFS (their post-NTFS effort) backwards compatible, so now they're shipping it as "Dev Drive". A Dev Drive is the same thing as a normal drive, but not as slow, because they concluded that only developers care about filesystem performance:

https://learn.microsoft.com/en-us/windows/dev-drive/

But the userspace also has a lot of weird performance problems, many introduced by their sandboxing efforts. For example their FS broker was extremely slow for a long time, maybe still is.