Normal double-buffering involves doing something trivial at the moment of buffer-swap, like changing pointer or at most doing large-ish memory copy. Double buff

Normal double-buffering involves doing something trivial at the moment of buffer-swap, like changing pointer or at most doing large-ish memory copy. Double buffering DOM would either not solve the problem (in the case of doing the layout computations in background and then swapping already layed out DOM) or would involve doing all the layout computations at once when the swap happens (with the implication of this being mostly equivalent to loading new page and thus slow and in many cases too slow to happen at 30, 60 or whatever Hz)