Blackbox Inno Setup Script

[hydefromt70s]

Is there any way to force the installer to unpacking files "on the fly". I mean instead of unpacking the files one by one arc -> SREP -> PCF -> arc -> the relevant data on the hard drive, unpack it in RAM to increase the speed of installation.

For packing games mostly I use Kurutucu Compresor with these two commands:

arc a -ep1 -r -ed -lc2048 -ld1024 -mt8 -w. \ -msrep + lzma: a1: mfbt4: d158m: fb273: MC1000: LC8
arc a -ep1 -r -ed -lc2048 -ld1024 -mt8 -w. \ -mprecomp + SREP + lzma: a1: mfbt4: d158m: fb273: MC1000: LC8

When trying to extract the game using this script are first unpacked temporary files on the hard drive and it takes forever.

Is there any way to temporary files (SREP, PCF, etc.) were unpacked directly in RAM, and appropriate files from the game directly on the hard drive?