Topic on Talk:The Invincible
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I don't think that the game is using HDR at all. There are no visible HDR when running it on a HDR display with HDR enabled in Windows. Also the HDR setting in GameUserSettings.ini is set to false: "bUseHDRDisplayOutput=False" So I would suggest changing that to "False" and provide the usual link to options available in such cases in UE4