Sorry, by 'preprocessing' I meant things still done on each frame, but anything that is not raw pushing-vertices-into-the-gpu-pipeline, i.e. all polygon culling, LoD simplification etc.

But yeah, the amount of data you'd have to work on would be much greater, but the way I interpret all of this is that he's found algos to do that very fast, regardless of whether it's a lot of data.