All of the files contain wem audio and lots of other stuff which I didn't checked yet (and probably never will be becuase of over 1 million files). I assume that unpack for all files on SSD is over in probably 20 minutes, while repacking on a SSD is finished in probably 25/30 minutes (disabled AV).
I already did a test for merging all the patch files into their parent archives, which works great and reduce the size by ~6GB, unfortunatelly the game crash if you start a level. Maybe "packagedefinition.txt" or some hex editing is the key but don't know anything about it.
However I added a test on a SSD on my
previous test