sorry, i should have mentioned its not OVERHEATING or anything, its just getting up to 80 degrees c. 10 degrees hotter than usual on the ship. Its not a huge problem or anything it was just kind of strange that literally one of the smallest environments in the game was so taxing.
anyway, i turned on vsync and it seems to have worked TY
so use to playing games where vsync crates alot of mouse/input lag i usually just keep it off (skyrim im looking at you)