Final fantasy xv: Windows edition

[elit]

I am baffled once again how FitGirl repacked this. Her repack is ~45gb without extras. But game still have ~12gb videos which I recoded to 2.6gb and in those are duplicates which go after srep to 1.6gb. So I was able to save over 10+gb, but when I repack I still get about ~43gb! Of course I used ztool on .earc files which work great there.

So I dont know... how the hell she could get it ~8gb smaller(taking into account for non-recoded bigger videos duplicates). I am trying xdelta right now but I dont see much benefit over srep. Its about deduplication both. Only other idea would be razor/lolz instead of lzma, but its hard for me to believe those would make such a big difference. Anyone?