A 20GB folder is much easier to move between external drives or share with friends.
While "highly compressed" versions of (ranging from 2GB to 20GB) exist, they are than the full game. These versions fall into two categories: Repacks , which save bandwidth but take hours to install, and Stripped Down Builds , which ruin the game’s quality to achieve a small footprint. The Two Types of "Compressed" GTA 5 Standard Repacks (20GB - 40GB Download) :