Users can often choose to remove unnecessary language packs, extra cutscenes, or high-resolution textures.
First, a quick technical correction: the PS4 generally does not use the .ISO file format for its games in the same way the PS2 or PS1 did. PS4 games are typically structured as folders containing an .pkg file (the game data) and an optional .rap file (the license). ps4 iso games highly compressed repack