It's an immutable law of the universe that consumer computers will always take at least 30-45 seconds to boot. If yours is faster, wait a few years... the developers will allow enough regressions to slip in that it'll go back up again.
Every time I’ve had a computer that would boot faster than that, it seems I’d be stuck with a monitor that would take 30 seconds to come on and decide to display something.
Probably because your monitor’s OS is booting
I should start thingsthathaveanOSandshouldnt.net or something.
My Kaypro 1 boots into CP/M right away if the screen is already warmed up.
The hack around this would be to use your smartphone as your computer. Connect a keyboard to it. Do heavy stuff in the cloud.
Or run the 68k mac OS 9 in emulation. It's fun to watch it boot up like lightning.