I want to leave my laptop on all night because of a stream, but I'm worried about its performance / durability. Is that a legitimate concern?
They are already designed to withstand a bit of stress.
So that does not matter? I will then adjust the screen brightness to the minimum
That will reduce at most the electricity costs, more probably not.
Is good too
He keeps it loose, do not worry.
Durability (battery?) … Simply connect the charger.