artifacts problem

Need help about rendering and edge of objects.

Does anybody see also these artifacts during modelling in camera view?

But in user view artifacts are not visable!

I’m not sure is this my problem in my rendering, but there are also artifacts!

herethe blend file.

I hope anybody can help me.

Best wishes,

The problem is opengl related and does not affect your render. I posted this reply 2 days ago but it doesn’t seem to have gone through.