I've installed FlightSim2020 but unable to set graphics to 2560x1440.

The Xbox One S is able to upscale 720p/1080p to 4K. There is currently no setting for 1440p yet.

As Wichrun X has shown, 1440p support is coming soon. It is apparently making its rounds in the early Preview ring for testing, and will be arriving to public system updates in the coming months. How long, exactly? Nobody knows just yet.

https://twitter.com/CmdrDesslock/status/964352070902988800

Hi,

I've just tested this game. What resolution are you running your desktop in?

There seems to be an issue with the game changing its own internal resolution. My Desktop runs in 4K or 3840x2160. When I try to set the screen resolution in the game to anything, be that 2560x1440 or 1920x1080, the game just ignores it and goes back to
4K and hence only runs at 30 fps, and I've got an i7 8700, RTX 2080 and 16GB RAM.

However I've found a temporary fix for this game that seems to work for me to play at 60 fps in Fullscreen.

1. Run the game as normal.
2. In the graphics menu change to Windowed mode.
3. Right click on your desktop and select 'Display Settings'
4. In Windows Display settings, change the screen resolution to the desired resolution you want to use in the game.
5. Go back to the game and change the screen resolution here too.
6. Change back to full screen in the graphics settings menu,

You may have to change some of the other graphics settings to reach a locked 60 fps, but it worked for me.

Let me know how you get on.

As long as you have it hooked to your Xbox using HDMI and set the display to 1440p. It would be half of your monitor (2560x1440). I'm not sure if it would work in 5120x1440.

Okay.

I'm running a standard RTX 2080 with a dual fan. I play in 1440P (2560x1440). Everything is on Very High except for textures, these are on 'Ultra'.

Assuming you have good airflow, you should be able to do 1440P easily, just don't try to max the graphics, even on the super, it will push a little too hard.