[O] reformatting a quite large table

[Luca Ferrari]

Hi all,
I'm just curios, having a an org table that is 140 MB of text in size
(it's a dump of an sql table if that matters), how can I speed up
reformatting the table?
Something I can do in background or limiting rows to what is shown to
me in the buffer will suffice.
Is that possible?

Thanks,
Luca