I’ve been messing with the OLED and it’s beautiful! However, I’ve only been able to use HDR in some games like RE2 Remake, which allows me to select HDR. However, Mass Effect Legendary Edition also has HDR in the settings but will not allow me to select it, as it is stuck on “auto” without actually displaying the HDR badge on the SteamOS overlay.

I tried Tetris Effect and also was unable to get HDR to display. Is there something else I am supposed to do to activate it in certain titles, besides selecting it in game? Per pcgw, Tetris Effect apparently requires Windows to already be in HDR in order to select it.