I think this may be an issue more relating to Steam's Beta Client, if you have that enabled. I had some issues with that in several games (Grip included), particularly in Big Picture Mode.
Desktop: i5-3570k @ 4.6GHz, RX 480 8GB, 32GB DDR3-1600, Win 10 Pro
Laptop: i7-4720HQ @ 2.6GHz, GTX970m 6GB, 16GB DDR3-1600, Win 10 Home
Currently Playing: Gravity Rush 2, GRIP, Guilty Gear Xrd -REVELATOR- | http://i.imgur.com/FuDx2Un.jpg