I have a few users who are using dual screens. Let's call the screens A and B
Screens A use VGA cables to and Screens B use USB-to-DVI cables.
I have already checked the WIndows 10 power settings and the green settings on the monitors.
But Screens B keep "going to sleep" after about 30 minutes.
The only way to wake them , is by unplugging the USB-to-DVI cable and plugging it back in.
I checked the USB power settings too.