Quote - > Quote - It is the sun.

Even with the change in lighting, I like this image, although it might benefit from a mesh light on the face. Great scene!

I just turned off the sky to see if the sun was the culprit. I will turn it back as soon as I figure out whats the problem with the shoe.

Looks like I found a workaround. I subdivided the shoe in Studio and so far no jagged shadows.