Metal Gear Solid V: The Phantom Pain features a GMP exploit that can get you around 3 million GMP per hour. How to achieve this is detailed in the video above.
You will need to play Episode 8 and land at a certain location. Also, remember to take decoys with you during the mission. At most, it takes around 5 minutes to do this.
GMP in MGS V isn’t an issue as players can earn it by doing side-ops or sending Diamond Dogs to missions. The point of concern is resources as they are hard to find. The creator of the video says that he is looking for a method to earn resources.
Metal Gear Solid V: The Phantom Pain is now available on PC, PlayStation 4, PlayStation 3, Xbox One, Xbox 360.