[elit]

^Yes that is to be expected as threads have to wait for each other at some point to advance It should still be faster than one by one step of bms tool, although using your style where you dump raw files and use ppx to parallel them is of course even better.
But I think in those Persona 5 packs some files are not compressed(in the same file). They(some) don't have "CRILAYLA" header and dealing with all that really add to work. I could just dump ones with header of course as those without are likely uncompresable like audio and videos anyway.
But with xtool this saves so much hassle for just little extra time.


EDIT:I tried another cpk file with FA GUI and c32mb, I am getting about ~9mb/s inflating and ~10mb/s recoding it. ~10mb/s is IMO more than ok and I saw someone's oodle giving only slightly higher speed. Deflate gives me about 20mb/s(decompression) so 10mb/s for crilayla is great.