Nougat pop up view/split view freeze issue

[AC Question]

I have galaxy s7 with latest Android 7 (nougat). I usually play a game while watching a movie. I would start a game on autoplay and open tha video player on pop up view. And sometimes use whatsapp as popup as well. Now back in marshmallow 6.0.1. Everything worked fine but now in nougat whenever i open a pop up whether a video player or whatsapp. The game will freeze. Tried multiple games.. Happens with every game. It will unfreeze if it touch it. But as soon as i touch/press player/whatzapp the game would freeze again. Not sure if the issue is with nougat. Any help is appreciated. Thanks.