Windows 10 Iot Enterprise Ltsc 21h2 Build 19044... -

As of Build 19044, Microsoft had fully integrated from earlier Windows 10 versions. Importantly, because LTSC 21H2 does not receive new features, it also avoids the controversial performance regressions that accompanied certain post-21H2 “security enhancements” (e.g., speculative execution mitigations that dramatically slowed I/O). For real-time or near-real-time workloads, Build 19044 thus offers a favorable balance: modern security mitigations are present, but they are frozen at a known, benchmarkable state.

Even a gold build has quirks: