When you initially sign into Windows, by default you’ll see the “pulsing color” screen as first-time “things” are done in the background: You can disable that “first sign-in animation” via GPO, MDM policy, or equivalent registry entry. I cover that a while back: https://oofhours.com/2020/06/08/make-esp-look-better-by-disabling-fsia/ But other than the extra CPU consumed by the animation (a…