I bought a top hat from TurboSquid. The image on that site is very smooth and looks fantastic. However, when I bring it into Element, it's as if the edges are missing some poly's or something because it's jagged. Is there a way to fix this? Does anybody know why it's doing this?
Without knowing what exactly you bought and what it looks like nobody can advise specifically. On a more general level probably the normals are not aligned properly and there are smoothing issues many of which you can usually fix in the object's advanced properties in the E3D editor while some others may require a "hard" fix by working them over in a 3D program.