This is my first Android so if I don't know all the terminology I apologize. I have an S7 with Nougat. At times, frustrating, the phone goes to sleep and takes 15-20 seconds of pushing buttons to get it to wake up. It happens when many apps are open but can't say which ones. Is this something that anyone else has experienced? I've seen other times it was happening but that was as while back with a different build.