Glitchy lines appear on placed images when I scroll in overprint preview, using Sierra 10.12.6

[Antonia_Designs]

Hello,

I am having lines appear as I scroll over images in overprint preview. I'm using a MacBook Pro 15" with os Sierra 10.12.6. The document sticks for a minute when I try to scroll, and then makes these glitchy lines on the images at different intervals along where the top of the page had overlapped before. What to do?

[Steve Werner]

Try toggling off the GPU Preview under the View menu.

[Antonia_Designs]

It says CPU but I can't click it

[Steve Werner]

In that case, it doesn't seem to be a GPU issue.

Do the images look OK if opened in Photoshop?

[Om Nath Jha]

Hi Antonia,

Did you check the images in Photoshop, as suggested by Steve? What is the exact version of Illustrator used? What is the screen resolution?

Regards,

Om

[Antonia_Designs]

An update here - after checking hardware and my iOS and lots of troubleshooting (including trying things above) we made headway today ----

This problem only happens when I scroll on the trackpad. It DID happen on three different MacBook laptops, including a new Touchbar. So now I'm using a workaround of using my mouse, but it's a real bummer since I would like to use the trackpad.