you the "expert" PrinceGupta2000...
in decompession i meant using zstd it use 128mb of memory and limt srep to 128mb not 512mb in inno will not make the proccess slower
i test large file (assassin's creed syndicate) with srep+zstd using '128mb' '256mb' and '512mb' in inno setup on normal hdd wd black 1tb write speed was around 176 mb/s max and the same time it took to install so using more than 128mb for srep on hdd is waste of memory usage...