>>328050445
That "Turn off Display" option is based off of the proximity sensor in the headset. It's a small IR sensor that's hanging down between the lenses and is how the headset tells if it is on someone's head or not. As long as that sensor senses something, the displays will never turn off. When it stops seeing something, that 5 minute "turn off displays" timer will start. It's likely that your sensor is faulty and not detecting that you're wearing the headset.