- Right-click on the game title under the Library in Steam and select Properties.
- Under the General tab click the Set launch options… button. Enter the following : ‘-FastLaunch’ (without the quotes)
- Close the game’s Properties window and launch the game.
Another option is to download the SDK, and to execute fsdevmodelauncher.exe (inside Tools/bin) each time you want to run the game.
Create a new desktop shortcut containing the following command:
cmd.exe /C start shell:AppsFolder\Microsoft.FlightSimulator_8wekyb3d8bbwe!App -FastLaunch