When I render my character, everything that is shaded kind of metallic, except the balls that are flying around the model, does have these triangles of low quality in it. In the preview everything looks perfect but when I go into rendering mode, it looks pretty bad in comparison. I already tried to change the render devices and to work on the light paths but I just can't find the source of this. I'm rendering in Cycles btw. To be more precise: My problem is all about the parts you can see on the render image where the reflection and distortion of the metallic surfaces is almost cut out of the model but it should be looking like on the preview version (1st image).
And here are my settings :\