ISArcEx - A FreeArc Archive Extractor Plugin for InnoSetup

[wrathma]

Originally Posted by audiofeel

Think of it like playing music. You can’t play two different songs at the same time using a single player - one has to wait. If you want parallel playback, you need two separate players.
It’s the same here: the unpacking engine works as a single "player". It processes one archive at a time. To unpack multiple archives in parallel, you would need multiple independent instances/processes doing the work simultaneously.
In the context of Inno Setup (and this library), that’s not supported - there’s effectively only one unpacking pipeline, so everything runs sequentially.

i might have a clanky workaround that is to unpack the the big file using the installer and running a batch script on the background to unpack the other small archives. not tested but im pretty sure it will get the job done.