The game supports native 4K resolution and HDR on compatible hardware.
If you are using the CODEX release specifically, you can manage certain game settings externally: Sniper.Elite.V2.Remastered-CODEX.part1.rar
The "Sniper.Elite.V2.Remastered-CODEX" release brings several graphical and technical updates to the classic tactical shooter. Key Features in the Remastered Version The game supports native 4K resolution and HDR