Search for the Hex value 39 8E 63 40 (the default 16:9 value). Replace it with the value for your monitor's aspect ratio: 8E E3 18 40
The most common issue in Sleeping Dogs: Definitive Edition is the "Exclusive Fullscreen" bug, which can cause the game to report incorrect resolutions or refuse to display at your monitor's native ultrawide width. Download and install the Borderless Gaming program . sleeping dogs ultrawide fix
39 8E 63 40 (check specialized Widescreen Gaming Forum threads for current 2026 values). Search for the Hex value 39 8E 63