Zig zag line appears around edge when I create shape with gradient and opacity

[Jeremy2340219157lv]

When I create a shape using the pen tool, and then fill with a gradient that has some opacity on some or all of the parts of the grad, a zig zag line appears around the edge which I can't get rid of. I went to'Apperence' and switched off the stroke, but this still didn't rectify the problem.

Can anyone please help solve this issue? 

[gianvitulano]

Hi Jeremy,

could you attach a screenshot, please?

[Ton Frederiks · Accepted solution]

It sounds like a GPU preview problem.

Try Cmd or Ctrl E to switch between GPU/CPU preview.

[Jeremy2340219157lv]

Thanks Ton, I tried Cmd E and that's now got rid of the zig zag line.

Many thanks for your help, much appreciated.

[Ton Frederiks]

Good to hear that helped. It is just a preview problem and will not affect print or export. I often switch with Cmd E if I don't trust the preview.

[Adam Zubin]

What seems to be the issue here with the edges on the phone here? Any idea why?

[Monika Gause]

Illustrator is sometimes not very good at rendering pixel images.

What file format is it?

[Ton Frederiks]

What did you do there? Generate it yourself, placed from Photoshop? What is the resolution?

[Brad @ Roaring Mouse · Accepted solution]

@Adam Zubin : It looks like your placed phone image is lower resolution than needed, since the rest of the screen image is better rendered. Check the resolution of that asset.