TABLE OF CONTENTS
- Background Info
- Windowed Mode
- Full-Screen Exclusive Mode
- Advanced Tips
- If Using Curved Monitors
- Why doesn't my G-SYNC work?
Background Info
There are two methods for setting up three monitors for iRacing: run the simulation inwindowed modeor use afull-screen exclusivemodeprovided by your graphics card manufacturer, such as NVIDIA Surround or AMD Eyefinity. Both methods are outlined below.
Windowed Mode
With this method, you run the simulation in a window that spans all three monitors. You can run in a window with a title bar and resizeable borders (so you can drag and resize the window) or in a window with no borders to mimic a full-screen experience.
This is usually the easiest mode since it bypasses the need to configure NVIDIA Surround or AMD Eyefinity.
Step 1: Launch the Graphics Config tool | Launch the iRacing UI App. Click on “Settings” in the bottom-left of the main window.
Click on the “Interface” tab in the pop-up that appears, then click on “Run Graphics Config” near the bottom of the pop-up:
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Step 2: Choose Graphics Config options | First, select a display that uses the GPU you wish to use for the sim. Then click “Auto Configure” (it should not matter which of the three displays you choose).
Next, select a resolution for the initial window size. Use the default or a lower resolution, as you will manually resize the window in a later step regardless. Also, ensure “Run in a window” and “Window Border” are checked. Finally, click “Finish”.
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Step 3: Launch the sim and resize the window | Launch the simulation from the iRacing UI App (you can use a Test Drive session). Position and drag the simulation’s window to span all three monitors. Do this by clicking and dragging on the edges and top bar of the simulation window. Finesse until satisfactory. |
Step 4 (Optional): Turn off the window border | In the Graphics tab of the Options within the simulation, uncheck “Border.” This will remove the border from the sim window, giving a more pleasing appearance. However, you will also lose the ability to move and resize the sim window. You can re-check “Border” at any time to regain this ability.
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Step 5: Configure displays in the simulation Options | Within the simulation Options, on the Graphics tab, click “Monitors” to open the monitor configuration window. Input information about your specific monitors (see more under Advanced Tips below). |
Full-Screen Exclusive Mode
With this method, you use the configuration tool with your graphics card to create one combined virtual display from your three physical displays. iRacing then uses that one combined display to render the simulation.
This is a true full-screen mode, which may be more desirable to some users. Be cautious, since when using this method, if anything should pop up on top of the sim window while racing, such as a notification, the simulator may revert to windowed mode, which may be a distraction while racing.
Step 1: Configure full-screen mode via graphics card settings | Configure full-screen mode for your desktop using the configuration tools with your graphics card. NVIDIA cards use NVIDIA Surround, while AMD cards use AMD Eyefinity. Consult the links below for detailed steps: Full-screen mode with NVIDIA Surround. Full-screen mode with AMD Eyefinity. |
Step 2: Launch the Graphics Config tool | Launch the iRacing UI App. Click on “Settings” in the bottom-left of the main window.
Click on the “Interface” tab in the pop-up that appears. Click on “Graphics Config” near the bottom of the pop-up:
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Step 3: Choose the Graphics Config options | First, select the new display created by the graphics card’s configuration tool (your three physical displays should now be combined into one virtual display). Then, click “Auto Configure”.
Next, select a resolution and refresh rate. Be sure that “run in a window” is not checked. Finally, click “Finish”.
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Step 4: Configure the displays in the simulation Optionsmenu | Launch the simulation from the iRacing UI App (you can use a Test Drive session). Within the simulation Options, on the Graphics tab, click “Monitors” to open the monitor configuration window. Input information about your specific monitors (see more under Advanced Tips below). |
Advanced Tips
The “Monitors” menu contains settings you can use to refine your triple monitor setup further. You can open this menu from within the simulation. While exited from the vehicle, click “Options” in the upper right, then click the “Graphics” tab, and finally click “Monitors” in the top section.
The following assumes that all three of your monitors are of the same model, size, and resolution.
If you want to refine your triple monitor setup further, follow these steps.
Change “Monitor Type” to “3 Flat Screens” (or “3 Curved Screens”).
Be sure “Monitor Width” is accurate to your monitors. Measure edge-to-edge (not diagonally), including bezels.
In “Bezel Width,” enter the width of your monitors’ bezels (on a single edge, not combined).
In the “Field of View Calculator” section, input the viewing distance from your eyes to the center monitor, then click “Compute.” This should automatically set the ideal field of view based on all the above settings.
After completing the above steps, you may enable “Render scene using 3 projections”. Enabling this will cause the simulation to render each monitor using a separate camera, giving you more control over how the simulation renders across the three monitors and providing a more realistic view of the race track.
Step-by-step instructions:
Enable “Render scene using 3 projections”.
If you have an NVIDIA graphics card, check “Enable SMP/MVP.” This will provide a performance enhancement.
In “Angle between center and side screens,” enter the angle, in degrees, where your center monitor meets your side monitors. Adjust your monitors so the angle is identical where both side monitors meet your middle monitor.
4. Finally, in the “Field of View Calculator” section, input the viewing distance from your eyes to the center monitor, then click “Compute.” This should automatically set the ideal field of view based on all the above settings.
Notethat if “render scene using 3 projections” isnotenabled, “Angle between center and side screens” will not affect how the simulation is rendered.
If Using Curved Monitors
If you use curved monitors, you will not see a setting called “Angle between center and side screens,” as described in step 3 above. Instead, you will see a setting called “Radius of curvature.” You should enter the radius of your three monitors in this field rather than an angle. Consult the materials that came with your curved monitors for the correct radius value.
Why doesn't my G-SYNC work?
Nvidia does not officially support multi-monitor G-SYNC without using Nvidia surround. However, users have found that disabling Multiplane Overlay (MPO) resolves visual issues with G-SYNC and also allows them to use G-SYNC without Surround.
Nvidia provides registry files to disable and enable MPO: https://nvidia.custhelp.com/app/answers/detail/a_id/5157
After running the "mpo_disable.reg" file, simply reboot and the changes will take effect. Run the "mpo_enable.reg" file and reboot to revert the changes.
