My three monitors have varying resolutions if that matters.
To have multiple monitors working with Flight Simulator X, you need a Video Card that allows you to hook up those monitors. If that is the case, configure them correctly via the control panel of Windows.
After that is all working, proceed with these Steps:
- Start Flight Simulator X.
- Click Learning Center.
- Click the Index tab, and then click the letter D to go to the Display section.
- Under Display, click Using Multiple Monitors.
Next, open the folder "%AppData%\Microsoft\FSX-SE" by pasting this path into your local explorer. Then open the file fsx_se.cfg with any text editor of your choice. Look for
WideViewAspect=false and change it to
After doing that, you should be able to set a resolution that works with your setup in the options of FSX. However, I am note quite sure if this works with monitors with different resolutions. I assume this will only work correctly if you have 3 feature identical monitors.