Is Win10 TB more efficient than Win11's?

[e-t-l]

Somewhere I read someone saying (maybe on reddit?) that when using EP, the Win10 Taskbar is more resource efficient, "because the Win11 Taskbar is basically drawn over the Win10 one. So using the Win10 one is essentially just hiding the Win11 Taskbar."

Can anyone confirm whether this is accurate? (Is that a reasonably correct description of how the two taskbars work, and does using the Win10 one actually result in any improved performance?)

Thanks!