{
"DisplayFullscreen": 1,
"DisplayWidth": 1920,
"DisplayHeight": 1080,
"DisplayRefreshRate": 0,
"DisplayVSync": 1,
"DisplayGamma": 50,
"DisplayDxAdapter": -1,
"GraphicsMotionBlur": 1,
"GraphicsAniso": 16,
"GraphicsLodFactor": 3,
"GraphicsPostEffects": 1,
"GraphicsTextureDetail": 3,
"GraphicsWaterDetail": 3,
"GraphicsShadowsResolution": 2,
"GraphicsSSAO": 1,
"GraphicsVignette": 1,
"GraphicsGI": 1,
"GraphicsAA": 4,
"GraphicsSSReflection": 1,
"GraphicsTerrainTessellation": 3,
"GraphicsVolumeFogQuality": 2,
"GraphicsHeatHaze": 1,
"GraphicsFurQuality": 2,
"ControllerSensitivity": 80,
"ControllerAimSensitivity": 80,
"ControllerAcceleration": 80,
"ControllerInvertAimingY": 0,
"MouseSensitivity": 100,
"MouseAimSensitivity": 100,
"MouseInvertAimingY": 0,
"GameAimToggle": 0,
"GameTutorials": 1,
"GameRoamingMissions": 1,
"GameFOV": 60,
"GameFreeCompass": 1,
"GameMPNameTags": 1,
"GameDisplayUnits": 0,
"GameHighlightKill": 1,
"GameSpottingOutline": 1,
"GameVisualAudioClue": 1,
"GameTrackingCone": 1,
"Game3DIcons": 1,
"GameLookout3DIcons": 1,
"GameOutpost3DIcons": 1,
"GameNeedZone3DIcons": 1,
"GameLandmark3DIcons": 1,
"GameHuntingStructure3DIcons": 1,
"GameClue3DIcons": 1,
"GameLore3DIcons": 1,
"GameStorage3DIcons": 1,
"GameCabin3DIcons": 1,
"GameBoard3DIcons": 1,
"GameSpot3DIcons": 1,
"GameTrackHighlights": 2,
"SoundGameplayVolume": 90,
"SoundMusicVolume": 90,
"SoundVoiceVolume": 90,
"SubtitleEnabled": 1,
"ControllerVibration": 1,
"TobiiTrackerEnabled": 1,
"TobiiExtendedViewEnabled": 1,
"TobiiExtendedViewResponsiveness": 50,
"TobiiExtendedViewHeadTrackingSpeed": 50,
"TobiiExtendedViewMaxYawAngle": 60,
"TobiiAimAtGazeEnabled": 1,
"TobiiBinocularsAtGazeEnabled": 1,
"TobiiCleanUIEnabled": 1,
"TobiiDynamicLightingEnabled": 1,
"TobiiBungeeZoomEnabled": 1,
"TobiiSpotAtGazeEnabled": 1
}

自己找到了，按照英文意识，
应该选项"GameAimToggle": 0,
改成"GameAimToggle":1,
即可

文件在我的文档里，settings.json。