Do you have the latest Smart Gesture drivers for your model? A re-install might help, you can get it here -
https://www.asus.com/Notebooks/ROG-G752VS/HelpDesk_Download/As for the sleep problems, it is common to all asus products. No matter what you set, where you set it, it will still be retarded. Because of this, i never put my g752vy to sleep. Even after shutting it down i have to wait a few minutes before i close the lid, or it will power on again, then go into sleep mode. Myself and other people have had the same problem where they turned it off and closed the lid, then put it in the laptop bag, where it overheated and produced a massive amount of heat. In short, this is a common problem with no solution. Just shut down the laptop when you're not using it, and wait about 5 minutes before closing the lid after shutdown. These rog laptops are like high performance sports cars, they really are a joy, but are notoriously unreliable. All the best with yours.