Just watching a large flat file tile out and thinking about it...
flat, size=142080x78366
which for me tiles out in 8 levels
level8 is written first, then l7,l6,l5...
level1 is only 6 tiles of 1152x636 which is tiny - it should take no time to write. But it takes a considerable amount of time (hence the thinking!). I'm guessing its reading the file from the original large size psb.
But it could get the same information from the tiles one level up level2 2176x1202 in 15 tiles. And my basic understanding of the kmaketiles command would lead me to believe that this would be massively quicker
This might only make sense to do on smaller level where there;s less than 1000 tiles. And I'm not sure how this would work with Equis
Just an idea