Well i dont know. Maybe the huge secret is that i use timeriffic and its sets the brightness to the lowest but visible value like 3, and the other thing is that my phone goes to airplane mode from 23:00 to 07:00 also with timeriffic. It saves battery and i also dont get disturbed during the night. Other settings are normal, compchace default, vm heap on 32, oc at 614, sensors and cpu on performance. Thats all !
In SAMSUNG we trust!