What are the games that could use this feature?
Only BF4, MGS and TLOU come to my mind.
Bloodborn, DriveClub, The Evil Within, Alien Isolation,... are 30 fps
There are tons of 60 FPS games that will benefit from this.
Sports games, Wolfenstein, Diablo, Guilty Gear, Resogun, Tomb Raider, Metro, most indie games...