> ## Documentation Index
> Fetch the complete documentation index at: https://help.freakhosting.com/llms.txt
> Use this file to discover all available pages before exploring further.

# How to Configure Triple Monitors in ATS

> Maximize your American Truck Simulator immersion by enabling triple monitor support. Learn how to adjust your configuration files for a realistic field of view.

## 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.

<CardGroup cols={2}>
  <Card title="Difficulty" icon="gauge-low">
    Beginner Friendly
  </Card>

  <Card title="Time" icon="clock">
    10 Minutes
  </Card>
</CardGroup>

***

## 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.

<Steps>
  <Step title="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.
  </Step>

  <Step title="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).
  </Step>

  <Step title="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.
  </Step>
</Steps>

***

## Multiplayer Considerations

While multiple monitors primarily provide a visual enhancement, they interact with networked servers in specific ways that you should keep in mind.

<Tabs>
  <Tab title="Server Performance">
    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.
  </Tab>

  <Tab title="Spatial Perception">
    Because a wider FOV can alter your perception of depth and width, always remember that the server calculates collisions based on fixed truck hitboxes. Your visual setup does not change your truck's physical presence in the world.
  </Tab>
</Tabs>

<Tip>
  ### 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.
</Tip>

***

<Note>
  ### Need Extra Help?

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

  * **Live Chat:** Quick assistance via our website.
  * **Support Ticket:** [Open a Ticket](https://freakhosting.com/clientarea/submitticket.php)
  * **Discord:** [Join our Community](https://discord.gg/freakhosting)
  * **Email:** [support@freakhosting.com](mailto:support@freakhosting.com)
</Note>

<Tip>
  ### Save on Your Hosting

  Ready to get a new server? Use code **KB20** at checkout for **20% off** your first month!
</Tip>

***

<div align="center">
  **Last Updated:** January 2026 | **Hardware:** Maximum immersion.
</div>