Newly added lines and shapes in illustrator appear pixelated

[natalija38182019xhj2]

So I've been using illustrator for some time now and have never had these type of issues, today I continued working on a technical drawing in illustrator and I've noticed that any new lines and shapes that I added appear jagged and pixelated especially compared to rest of the drawing that doesn't display these type of issues. So only the new additions to the drawing are pixelated not the rest. That's why none of the solutions I've found online so far have been helpful... Please, I'm open to any suggestions it's been so irritating 

[Doug A Roberts]

Can you show some comparisons -- with the relevant object selected and visible in the appearance and layers panels?

[natalija38182019xhj2]

So the black ones are the newly added ones next to the slightly brownish already existing ones 

Thanks for the fast reply 😊 

 

[natalija38182019xhj2]

[Doug A Roberts]

Are those existing lines selectable, or part of some linked/raster file?

[natalija38182019xhj2]

Fully selectable 🙂

[natalija38182019xhj2]

For example I can bend them and they are still smooth but when I add a new line and do the same it becomes very jagged and pixelated 

[Doug A Roberts]

Looks to me like antialiasing is adding light pixels at the edge of the stroke for some reason.

What colour is the background?

Is the stroke CMYK black or a rich black?

Does it change if you use GPU preview?

[natalija38182019xhj2]

Okay so update, I saved the file and force quit illustrator, then I opened it again and changed the stroke colour from default black to picked black and the issue seems to have resolved itself. Also before all that I saved the file as pdf and it didn't display those pixels so it must have been a temporary bug cause I already checked the antialiasing and the gpu and it didn't change anything 

But it's good now, I really appreciate the help 🫶

[_scott__]

What system are you using? Specifcally, what's your monitor resolution?

[natalija38182019xhj2]

I'm using Mac Pro (2013)

(2560x1440)

[_scott__]

Okay, then my train of thought isn't valid. Ignore me 😉

[Mike_Gondek]

What Ilustrator and MacOS are you combining? 

What are the exact CMYK values for both your blacks, they should be the same. Check your appearance panel as you may have some effect on the new strokes, or an errant effect applies to the layer. Try a whole new document to see if this happens if you are not an expert with appearance being assigned to layers, groups, strokes, etc.

[natalija38182019xhj2]

I'm using the 2022 27.0 version of illustrator and MacOs Monterey

I've tried the new document and it was the same, but when I exported it as pdf the pixelated parts were normal and smooth.. Now the issue has resolved itself so I am hoping it won't occur in the future 😊