GameStream will apply game settings based on your display resolution and GPU. In some cases, the user may choose to apply their own settings instead. To access this feature.  

• Open the NVIDIA Games app

• Open Settings >  [GTX PC NAME]

• Select Show advanced options
  

• Select OPTIMIZE GAMES

By disabling the Game optimization switch, all games will be streamed using their current in-game settings.

The user can also select individual games they would like run with optimized settings.

HDR NOTE:  In order to run a game in HDR mode, the game must be run with optimized settings enabled. The user can still adjust game settings once streaming has begun.