If you create a background that is 2000 px height and then stretch it 4 times so it's really large in the game and let's say your background is a gradient, the game will always show a different area of the background at start. I'm currently fiddling around to get it perfect.
@danielhannih I tried the tall background trick and can't make it randomize positions every start. Does it work on preview too or in device only? Am I missing something? I have the 2k px tall gradient but it shows the same area every start.