Under General Settings, you will get the following options:
Autoload: If the autoload is turned on, the panorama you upload will load automatically. Otherwise, it will load on–click.
Show Controls: Turning it on will view the on-screen control button, such as zoom in/out and full-screen mode.
Auto Rotation: Assigning a value in this field will mean that the virtual tour will auto rotate within the time mentioned.
Auto Rotation Inactive Delay: If Auto Rotation is assigned, then inputting value in this field will stop the rotation for the mentioned time when clicked on the virtual tour.
Auto Rotation Stop Delay: If Auto Rotation is assigned, then inputting value in this field will stop the rotation after the mentioned time. (This will not work if you input value on Auto rotation Inactive Delay).
Scene Fade Duration: Fade duration can be added in milliseconds for the transition between two scenes.
According to this image, the scene fade duration is set to 1000 milliseconds i.e. 1 second. Hence there will be a 1 second fading effect to transit from one scene to another.