Rough edges on drawing and PDF

Hello,

I use soldworks for images, when saving the drawing to PDF I want to have straight "Vector" edges. When the display mode is in Default display we have vector edges. However, when using a different display mode like hidden lines removed, the edges become blurred and rough on PDF. 

What settings need to be changed to make second case more straight?

*Drawing is set in High Quality

Gr,

H

SolidworksDrawings And Detailing