Viewport jagged Model?

I bet Martin will say to update your video card drivers. Is that just the default cube in normal object mode? Or are you in texture paint or some other mode?

Wow, that is really bad @nougat time !

My first guess would be, that it is due to a third party Addon (as it's okay with Factory Settings).

But I must admit, that I've never seen this before.

Oh man, I feel like such an idiot😉

It was right in my face, how could I have missed this:

The Clipping range is too large @nougat time ,

If you divide the Clip Start by 10, you should also divide the Clip End by 10 (from the default values...)...it's not exactly like that, but if Clip End divided by Clip Start gets too large, you get 'rounding errors'.

Oh man you're right, this is the second time we've seen this problem. Add it to the list Martin. 

I've seen it more than twice Omar and it is on my list!

It just looks more extreme usually, so I didn't recognize it immediately.