The images generated by the row_flow_v3 have serious jagged edges.

[Alex12358]

The images generated by the row_flow_v3 have serious jagged edges. Here are my depth map and the output image

[Alex12358]

The images produced by using forward_fill do not exhibit a significant amount of jaggies.

[nagadomi]

It is an artifact problem that is difficult to avoid as long as row_flow_v3 (and high 3D Strength setting) is used.

If you are not using Edge Fix(--edge-diliation), I think Edge Fix can reduce that artifact.
If forward_fill is not too slow, you can use it.

My guess is that there are originally little jagged edges at the character and background borders due to anti-aliasing or encoding noise. These pixels do not exactly match the depth, so they are stretched by image warping in row_flow_v3.
A similar problem occurs in photo due to the hair depth mismatch.

[gituser123456789000]

I've seen similar and worse with high Strength and using 1.0 (or near 1.0) convergence plane

row_flow_v3 is still my go-to option though

Check your convergence plane setting and if it's 1.0 or near 1.0.. lower it a bit and this should help.. if that's the issue. Otherwise, still something to know about if you run into it later... or lowering Strength could be another potential improvement to these edges.