Jitter on Windows 10 Fullscreen Build

My game displays a jitter when exported as a Windows application, but runs smoothly at 60fps from within the Unity Editor (Mac or Windows), or even exported as a Mac application.

Displaying correctly within Unity:

https://youtu.be/S0n21CF6kC4

Jittering when exported as Windows fullscreen app:

https://youtu.be/FTPhVzg8K3A

In Quality Settings, if I change the vsync count to “Every Second V Blank” the issue disappears, but the game runs at 30fps which is not acceptable.

Using:

EVGA GeForce GTX 970 4GB.

Windows 10.

Unity 5.3.5.

Eventually found a fix by using script to set these settings:

function Awake () {

	QualitySettings.vSyncCount = 0;  // VSync must be disabled 
    Application.targetFrameRate = 60;

}