Every now and again, the screen on my 2016 Macbook Pro goes to sleep. I have turned off all energy savings preferences that i can see, and I only have noticed it in battery mode. But it will time out and the screen will go to sleep/black out. Even when doing something like playing a youtube video. It does not lock the macbook, just a touch of the trackpad and it doesn't do it again. Any suggestions? Thanks in advance.