Just noticed recently that if I have HDR enable, Windows 10 will try and force HDR on every game if its set to Exclusive Full screen regardless if the game supports HDR or not. This normally results in a terrible image for games that dont support HDR. The only fix seems to be disabling HDR in Windows 10 or switching the game to borderless fullscreen. Noticed this seems to be a recent issue and wondered if its caused by a recent Windows 10 Update and/or Nvidia drive update??