Ok so I have some weird stuff going on. Two cylinders with the exact same material but different results. Trying to figure out whats going on. Attached the main image showing the example and then screen shots of the texture and displacement settings.
It actually looks like the issue might be length of model vs max triangles. The model on the left is shorter than the one on the right. I made the right model as tall at it needed to be (4ft) but I believe the number of triangles maxes out which prevents the material displacing properly.
Is there a way around this other than just adjusting the max triangles setting? I could see similar files running into the same issue: long tree branches, large paved roads, etc.