is rebooting all worth it? (FNAF 3)

I would guess that rebooting all is for when all of them are down, but from what I can tell it leaves ventilation off for so long that the alarms go on forever, which makes me wonder if it's better to just reboot them one at a time. I've also seen someone imply that it would work well for if only two systems are down, but I'm not sure if that's accurate.