It seems as though any layer that has "passthrough" as it's mode, will export fuzzy and pixelated. I have chosen to export as PDF X-4 with the "allow advanced features" setting checked. I have found that if I change the layer mode to "normal" and export again, the issue goes away. Why is this? and furthermore Why is "Passthrough" mode a default that Affinity Publisher assigns to grouped layers if an FX is used on one of the layers? My question is, do I have to manually change each layer mode to "normal" so that the PDF will be crisp and clear or is there a quicker solution? I am using Affinity Publisher and using Adobe Acrobat to view my PDFs. Any help is greatly appreciated.