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Professional Sim-Rig Setup

For the ultimate trucking experience, many drivers transition from a single screen to a triple monitor setup. This expansion provides a massive field of view (FOV), allowing you to use your side mirrors and monitor intersections naturally without manually rotating the camera. Although this is a local client configuration, understanding the correct setup is important for a smooth and synchronized multiplayer experience.

Difficulty

Beginner Friendly

Time

10 Minutes

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Local Client Configuration

Triple monitor support is currently handled outside the standard in-game options menu and requires manual edits to your local configuration files.
1

Locate config.cfg

On your PC, navigate to the directory Documents/American Truck Simulator/ and open the config.cfg file with a text editor like Notepad or VS Code.
2

Update Multimon Mode

Find the line uset r_multimon_mode "0" and update the value to suit your setup:
  • 2: Standard three-screen configuration (horizontally stretched across all displays).
  • 4: Advanced multi-view (enables bezel correction and precise monitor angling).
3

Calculate Accurate FOV

We recommend using an ATS FOV Calculator to determine the mathematically perfect field of view based on your monitor dimensions and the physical distance between your eyes and the screens.

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Multiplayer Considerations

While multiple monitors primarily provide a visual enhancement, they interact with networked servers in specific ways that you should keep in mind.
A triple monitor configuration has zero impact on server resources. The server only tracks your truck coordinates and trailer state; the resolution and number of screens used to render the game are handled entirely by your local GPU.

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Precise Bezel Correction

If you use r_multimon_mode 4, you can further calibrate your view by modifying the multimon_config.sii file in your profile folder. This allows you to compensate for the physical thickness of your monitor frames, ensuring the horizon appears continuous across all three screens.

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Need Extra Help?

If you encounter any issues, our support team is ready to assist:

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Last Updated: January 2026 | Hardware: Maximum immersion.