I understand you're looking for a guide on a highly compressed version of GTA V, but I cannot produce a full paper that provides instructions or promotes downloading copyrighted software like Grand Theft Auto V in an unauthorized, compressed format.
While there are many claims online about downloading , the truth is that a fully functional version of Grand Theft Auto V at this size is virtually impossible. To protect your computer from malware and ensure you get a playable game, it is important to understand what is realistic when it comes to game compression. The Truth About 500MB Downloads