Atlas disables many Windows security mitigations (like Spectre/Meltdown patches) and power-saving features, resulting in lower DPC latency—ideal for competitive gaming and audio production.
: You must perform a fresh, clean installation of Windows before applying Atlas; applying it to an existing system will cause instability. atlas os windows 10 iso link
But here lies the critical question:
Upgrading your underlying Windows version after applying Atlas is strongly discouraged and unsupported. atlas os windows 10 iso link
Let us close with a clear summary: