Windows doesn't automatically turn off monitors?

[Akagi]

Hi guys, so I have the 'turn off display after' settings in both the power options and the advanced power options set to 15 minutes, but the displays remain on all the time, never turning off. This is an issue as my system is on 24/7 (folding at night) and has two screens connected. At the moment I have to turn one off, and leave the other one on but on a blank screen to save as much power as I can. (it has a 4 port USB hub built in which has my wireless adapter and a few other things connected.)

So i'm left wondering why my screens wont go off on their own. Any help appreciated!

 

[Akagi]

I used to fold using the same client on my last PC, and I still do so on a secondary PC, and the monitors power(ed) off as expected on both of those machines.

I woke up this morning to see that my monitors had turned off at some point during the night, but it was definitely after far longer than 15 minutes.