As a sidenote, there is definitely something off about this current GRD/Studio driver in terms of display sleep/wakeup. I thought maybe it was the AW3423DW before but this does not seem to be the case since it's happened twice today. When Windows sends the display sleep command after 20mins, the monitor goes to sleep, and it sometimes doens't wake up as it goes to a deep power down state and only power cycling the wall plug of the monitor brings it back.
With this driver I get periodic mouse freezes, same on both systems...
In terms of "SLEEP" I don't have that option selected, only a screen saver because I don't want my monitor to shut off unless I do a Pixel Refresh.
Might be worth doing that instead?