No way to "sleep" the display without disconnecting it from windows?

Hi,

I have kids so often have to get up from my desk and leave my game running. On my LG OLED I can turn off the display of video content but the monitor itself is still functioning/routing eARC and similar. On this Alienware I don't seem to be able to do that. So everytime my kids need me I have to either leave the game running burning in my pixels with a static image, or turn off the display which sometimes causes problems with some games because Windows sees it as disconnected and the game will panic or whatever and even crash sometimes.

Being able to blank the screen should be a base function of any OLED display in my opinion, hopefully I'm just missing how to make it happen with this 32" Alienware OLED, otherwise I'll probably have to send it back.