I'm really glad you liked my work - thank you! 😊
The quickest and easiest way to achieve the effect you’re looking for is to put the background on a separate layer and use two overlay cameras. The first camera should render only the background layer and move at a constant speed. The second camera renders everything else on top of it and stays fixed.
A more advanced method would be to modify the "AutoScroll" graph. Instead of linking the scroll speed to the camera’s position, you can pass in coordinates that are constantly updated by adding a value at a fixed rate.
Hope this helps, and happy developing!