I have reached with this issue already. Starting a new topic as I am having problems attaching original file link in my previous thread. Uneven, jittery lines, as mentioned before, when exporting even high res jpegs. All millwork in the model is made by me, not downloaded from the warehouse.
I got this when I exported the same view as @HannaTrzyna last posted. No jaggies or anomalies that I would see. What do your settings look like (Preferences>OpenGL)?
I didn’t do any cleaning up, and the main issue with flickering is with where walls are very close to being in the same location.
Here’s an unlisted YouTube link, of a 4k export I did. You will want to think carefully about the order of scenes, and which scenes not to include in the animation. This is all scenes in their existing order. I didn’t turn off profiles, but I did set the line scale multiplier to 0.5, to make them look slightly nicer.