Trying to stream church services for a small church on a tight budget and I'm new to all this. There are 2 cameras: 1 PTZ and 1 Amcrest surveillance fixed focus. They are using different ports and both have static iP address. Initially all works fine but when switching between different scenes and transitioning from preview to live in studio mode the Amcrest stops showing preview. The screen is black. If that scene is transitioned live the camera view shows up but goes back to it's default position. I have it zoomed in within OBS preview. I want to be able to make adjustments in preview. Any ideas?