I read that somewhere that you must set your (LG) TV input name to other thing than "PC" to make HDR in games work with Creator Update with the new Nvidia drivers post 378.92 or the TV was displaying HDR icon but the image was dull gray no matter what I set in nvidia control panel. I tried it again lately and, strangely, it works... Except in Mass Effect Andromeda.
I don't know if the coming update is going to fix this super broken implementation. That's improved though. The HDR switch in Shadow Warrior 2 enable or disabe the Windows Display settings HDR toggle.
