Here are some of the most useful Command Line arguments that can be passed through the shortcut's target area at the end. it would look something like this:
Command Line Argument
Description
-Game
Launches a UE Project as a game instead of with the editor.
-RenderOffscreen
Renders offscreen (Still seen by Live FX)
-ForceRes -ResX=1920 -ResY=1080
Sets the resolution. (Usually needs to match what you want your inner frustum to be).
-RCWebControlEnable
Required to use Web Remote Control
-RCWebInterfaceEnable
Required to use Web Remote Control
-t.maxfps = 23.976
Sets the max frame rate. Helpful if you do not set a project frame rate or need to limit it further.
/Game/Maps/MyMap
Before the other flags, this can launch a specific Map
