Stroke lines appear jagged/bugged, even when only slightly curved

[Amara5CE0]

[Doug A Roberts]

Is this in Illustrator or on export?

Do the jaggies grow if you zoom in?

If not, do you think what you're seeing might simply be monitor pixels?

[Amara5CE0]

1)- this is on illustrator

2)- if i zoom in its harder to notice it but it's still thre 

3)- if that's the case, does it mean that the work is too big/zoomed in ? (sry I'm a newbie)
Also, they disappeared when I preview on CPU, I don't really know what does that mean.

[Met1]

It means your GPU isn't up to snuff.

So just use CPU.

[Monika Gause]

Looks like some lines are stacked there and have different thickness.

Also: While Illustrator is vetor based, your monitor is not. It uses pixels to display the artwork.

[Amara5CE0]

nope it's only 1 line 

[Monika Gause]

Please show this line in the layers panel and in the appearance panel.

Better yet: please upload an AI file. You can delete everything but that part of it.