In Windows 10 (version 1809 and up) my write speeds are far lower than advertised but my read speeds are OK.

Last Update: August 13th, 2020
Article ID: 624689

With Windows 10 version 1809 the default removable storage settings are set to have write caching disabled in favor of quickly removing the drive vs needing to “safely remove”. This setting can be changed in the Device Manager. See here for instructions: https://support.microsoft.com/en-us/help/4495263/windows-10-1809-change-in-default-removal-policy-for-external-media