Fresco PDF file pixeled in illustrator

[MagicalArt]

Why does my PDF file from fresco look pixeled when i open it in illustrator or in other programs?

I only use vector brushes.

My designs are very simple. They are silhouettes, so no other colors or mixed with live brushes.

[Sjaani]

Unfortunately I couldn't open your test1.pdf file. Try inserting the image so we can see it without downloading.

This thread may hold the key to your issue.
Does the line look sharp on any other Illustrator file or are they all showing a pixelated view?

[MagicalArt]

Thank you for your time. I figured it out. I have to delete all other layers in my fresco design, before exporting it as a pdf. Now it works