For some reason Windows 10 is unable to detect Active 3D gaming sessions on the computer. The system goes into idle states (lock screen/turn off monitor/sleep) and only if the mouse or keyboard is not used during the gaming session. Checked with different game titles.
On the other hand the system does properly detect multimedia states, for example playing a video on youtube will prevent the idle timers from activating.
Using Crimson Relive 16.12.2 Drivers. I think it's a bug in the drivers, please fix ASAP.
P.S. Video Card is RX 480