This might be the performance boost you’ve been looking for.
Based on the build string you provided, here is the technical breakdown of what those numbers actually mean: Version and Build Breakdown 21H1 / 21H2 windows 10 lite version 21h221h1 build 1904x1387
Real 21H2 build 19044.1387 corresponds to (January 2022). This might be the performance boost you’ve been
1904x1387 is not a valid Microsoft build number. windows 10 lite version 21h221h1 build 1904x1387
: Improvements to Windows Defender Application Guard (WDAG) to speed up document opening .