Object appears jagged in final render?

Question

When I try to render a glass material, in rendered view it looks good, but when rendered, I get this wavy effect and black outlines.

Polygon detail:

The scene is just a glass object with a glass material, background with a texture with a Diffuse shader and a lighting setup of two plane emissions.

• Glass: 4 levels of subdivision surface modifier.

• Background: 4 levels of subdivision surface modifier.

• 2 plane emissions, with no modifiers.

• 80 samples.

What is causing that and how can I fix it?

Here's the file if anybody wants to explore it.

Answer 1

The subsurf modifier on the glass object is disabled in the render.

Make sure the camera icon the subsurf modifier is selected: