If I understood your question well :
I see the same artifacts with the same degree as without zooming(artifacts are not magnified)
Somebody told me that this is normal and they won't appear when they're printed out , is that right?
AnyWay, is that problem common or just me . I searched the internet and I didn't find any similar problems, anybody here used eagle to export to a pdf ?
Any recommendation for any PCB layout software that works fine regarding my problem ?