https://www.bleepingcomputer.com/news/microsoft/microsoft-finally-fixes-windows-11-slow-file-copy-issues-over-smb/

Microsoft has finally addressed a known issue causing significant performance hits when copying large files over SMB after installing the Windows 11 2022 update.

The bug was fixed with the KB5022913 February 2023 non-security preview update released on February 2022, which also introduced newly announced Moment 2 features.