Follow these simple steps;
- Go to the configuration files location.
(%USERPROFILE%\Documents\My Games\GRID (2019)\hardwaresettings\hardware_settings_config.xml)
- Open hardwaresettings/hardware_settings_config.xml with a notepad.
- Search for depthOfField=”true” and change it from true to false.
- Save and set the file to Read-only; failing to do so can overwrite the previous steps if settings are changed in-game.