The Steam and RGL versions are outright ignores many major bugfixes from previous retail releases in place of a whooping two minor fixes while introducing other bugs (e.g.The Steam and RGL versions are missing 1/10 of the game's licensed soundtrack thanks to expired licenses and Rockstar not willing to get them renewed.The retail Second Edition and Rockstar Games Launcher versions CANNOT BE MODDED, and if you try to do mod it, it will purposefully crash in the former's case or will actively prevent/undo modifications thanks to the DRM of the latter, most likely as Rockstar's way of getting back at modders for the 'Hot Coffee' fiasco.The problem with SE, Steam, and RGL versions: the short version