Jagged Lines

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I have seen some jagged line posts, but none seem to be similar to my situation. I am making a mark and I have smooth vector lines, yet the edges appear jagged (image below). This is the first I have noticed it and I have not updated or changed anything on my computer or program. I'm using Illustrator 27.0.1 on macOS 10.15.7. How do I fix this? Will it print with the jagged edges (my hime printer is down)?

Thannks, Greg

[Monika Gause]

Can you please show the outline view and the appearance panel with the selected object?

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[Kurt Gold]

How does it look if you turn on CPU preview in the View menu (instead of GPU)?

[master_view157F]

That did the trick. Thanks Kurt! Thanks Monika!