We had another topic like this. It would slow down the game... floodfill you screen with diamond. That is how slow it would be, without any air temperature.
i suggested it before, it would be like having the screen full of partials you cant see, Slow, unless you had a super computer, and thats what many users don't have. :L
An air temp wouldn't be that bad, since it would not be particles. It would just need a toggle on/off to preserve old saves. and for new ones that don't need it.
