Display problem, when I zoom over 4000%. PC or Software?

[Alessandro5DD1]

HI,

I just bought an Imac 27. When I use Adobe Illustrator and I zoom in over some vector shapes I noticed that the lines are not too clear, the effect is a bit similar to a raster image. If I click command+Y (outlines preview) and then I click it again the problem is fixed. I uploaded a little video of the issue.

Is this a software problem or it can be my graphic card?

Thanks for your help

Alessandro

[Monika Gause]

Does that look better when you switch to CPU preview?

[Alessandro5DD1]

HI Monika,

I just tried it. The problem disappears but illustrator became too slow. Almost impossible to use.

I have a 5K Retina screen, with AMD Radeon 5300 4GB, this information may can helps.

Thanks

[Monika Gause · Accepted solution]

The problem with GPU rendering is that the GPUis fast, but at the cost of precision.

Only thing you can do now is to report this as a bug:

http://illustrator.uservoice.com

Maybe there are driver updates available, but that's about it.