I have some GameObjects inside of a ScrollRect (really inside of a content object which the ScrollRect translates).
When the localPosition of the content object is moved, the child objects move as expected but the horizontal divider present at the bottom of each child object doesn't appear in a constant way. Sometimes the lines appear thicker or thinner and "shimmer" while scrolling.
I'd like the horizontal lines not to visibly change. Any ideas on how to do it?

I believe you can you use the Canvas.pixelPerfect property to force UI elements to adhere to pixelperfect standards.