Did anyone notice? Samsung just ruined the ram management of S7/S7 edge with the last update. It has become very poor, phone's no longer holding more apps in the background without refreshing them.
The answer for your question is really simple. Google camera does much better processing than the samsung's stock camera app. Also, samsung's camera takes pictures with more shadows, but you just don't get the dynamic range and picture detail as you ...
Clear the data and then force stop the application. If that doesn't work try updating the PlayStore application by tapping on its version number from the settings menu.