Hi, I bought an Imac 27" with 5K Retina display.

I noticed that when I zoom some vector shape, the lines are not too clean. They seem like bitmapped. When I click Command+Y (show outlines) and I click it again, the lines appear clean. I uploaded a little video about my problem.

I wrote in Adobe community, they suggested me to turn off GPU Performance. If i do that the images appears fine but Illustrator become too slow.

So they recommended me to report my issue here.

Thanks for your time.

Alessandro