• Direct X version: 11
• Resolution: 1280x800
• Refresh rate: 90Hz
• FXAA: On (Looks surprisingly decent on the Deck's OLED display)
• MSAA: Off (More details on this below)
• Vsync: Off (No need on deck)
• Population Density: 80% (Potential for 100% but needs further testing)
• Population Variety: 100%
• Distance Scaling: 80% (Potential for 100% but needs further testing)
• Texture Quality: Very High
• Shader Quality: High
• Shadow Quality: High
• Reflection Quality: High
• Reflection MSAA: Off
• Water Quality: Very High
• Particles Quality: Normal (Helps maintain 45FPS in intense situations such as cop shootouts and explosions)
• Grass Quality: Very High (Really wanted to see how far I could push this setting as the PS4 has this set to Very High I believe. I tested this in demanding areas (The grassy area next to the Freeway north of Vinewood Hills and other spots) and it maintains the target 45 FPS and looks beautiful)
• Soft Shadows: Softer
• Post FX: High
• Motion Blur Strength: Personal preference, but I like it at 45FPS
• Antistropic Filtering: 16x
• Ambient Occlusion: High
• Tesselation: High

• Long Shadows: Off
• High-Resolution Shadows: Off
• High Detail Streaming While Flying: On
• Extended Distance Scaling: Off
• Frame Scaling Mode: 5/4 (1x250) - I think this helps provide smoother edges and less jaggies than 2x MSAA. This will downsample the game to the deck's native 1280x800, rendering the game at around 1600x1000. Combined with FXAA I think it looks great.
• If you want this to be even better you can bump it up to 1.500X and drop down shadows, AO and tessellation to normal.

Dynamic Resolution: Off
Screen Space Global Illumination: Low
Graphics Quality: Custom
Screen Effects: Low
View Distance: Low
Shadows: Low
Textures: Medium
Visual Effects: Low
Foliage: Medium