I'm in the process of literally giving my old CV a new coat of paint. My old, working export settings for getting a clean pdf have been lost with the last re-installing of Windows. It should not be as complicated as it seems, though and it looks like I am overlooking something basic. The background is a linked and placed .psd file and does look sharp and clean in InDesign when working, as do the dark shapes that make up the middle layer. However, even when exporting with no compression on the images, the background ends up with visible compression artefacts. What option have I been overlooking?