Question Which one is saves power/heat most on a ASUS ROG G15 laptop?

[danny009]

20frame per second or low/lowest/off in game graphics settings including window size. Can I ask which one saves the energy/power most? I'd love to know save energy and reducing the temps on hardware. I'm also using %1 or max %20 brightness on this laptop all the time if that's matters. CPU power also limited to %70 max performance state.

Thanks in advance and god bless