Put 2024 SketchUp on my computer, now lines look jagged

I downloaded SketchUp 2024 on my desktop and laptop. Now the lines in my models are jagged. I have read the posts in this forum; however, they are a little bit dated. I have Goggled the problem and tried every suggestion. Can anyone walk me through how to set my anti-aliasing to the right configuration to achieve a professional looking model? I have reloaded my driver and tried different anti-aliasing choices. Still no luck.

What operating system? You put 2024 as the answer to that question in your forum profile but that doesn’t identify an operating system. What model of graphics card? Correct your forum profile.

Are you using the new graphics engine or the classic graphics engine?

Show us what you are seeing.