So, I recently reinstalled the game from scratch with GOG Galaxy, and couldn't help but notice that it was 58 gigs total, but the offline installer, if I wanted to download it and burn it to discs, takes up a full 104 gigs. They're both version 1.2

Whats up with that? Why does it take less space for me to burn the installed game to disc than it does for me to try and burn the installer?

Any chance you guys might be able to cut that installer down to size so I can fit it on a blu ray? Or at least a couple blu rays?