First of all, many thanks to everyone who wrote here, as it has made this thread extensively explanatory (like nowhere else, as I searched, even if it's so extensively explanatory that average users like me can't understood).
I think many users asking this question because searching proper settings to improve performance (mainly on older PCs or/and systems), I'm trying to add some 'skipped' (or side) info in a way that 'average' user can understood about system performance, and maybe they try to further research and make some experiment with.
"Skipped" for "Average users, and under" (like me)
(as simple can be described)
I'd like to mention (also) that "Minimum processor state" on "Power Options" also affects (eg.) "Shutdown/Sleep/Hibernation - on Idle time" scheduled task(s) *if they have been set.
What happens when/if set "Minimum processor state" to a high value is, the CPU will never get idle mode to trigger the action of the activated *(if any) 'scheduled task' like for example: Shutdown/Sleep/Hibernation, "Cooling Policy", "Defender Updates" and so. note: Most of them are also depended on "Minimum processor state".
^ In short: Windows sets by default some scheduled tasks to reduce power consumption on "idle" state. But, at the same time, there is an by default 'prediction not to fall into inactivity' ieeg. when tasks such as video playback or file downloads and so are performed, And additionally (lets say) "drives" the "cpu consuming" priorities where needed, so everything can be adjusted individually and automatically.
! This means that you should not change "Minimum processor state" (as affects many factors) but >Set the depended program/service or whatever, If needed, Instead.< !
*ie.: I think it's not wise to "frying" your cpu (if set to Minimum=100%) just because you need max performance (ex.) when you gaming, - but instead set to max only when you gaming and then revert to normal, but there's no need because windows successfully doing it automatically by default as when/if needed.
/!\ So, set it on your need but under 10%, only if you know exactly what you doing as you influence many factors by changing it. (I mentioned just some of them as for example) /!\
again: /!\ >Set the depended program/service or whatever, If needed, Instead.< /!\
ie.: In short and some kind of naively: (rough explain!)
Some procedures, or services, are not showed in "task manager" or there are 'into' the "svhost.exe", so,
if you insists, check "Task Scheduler">Task Scheduler (Local)>Task Scheduler Library> for running schedules. You can set/mode individual tasks & sub-tasks (general, Triggers, Actions, Settings) from there, to correlate processes with and schedule to run under settable circumstances.
For "diggers": "Individual settings" can be done by several ways, as (custom)"scheduled task", even with cmd file or even with a 3rd party program or accompanied Graphic card's optimizing program, etc. (but it's another thread. and needs some study about. ...)