Collapse transformations + 3d layer = blurry line.

[Polyflow]

Hello, I have issue, when I try rotate shape layer and enable 3d layer switch, my line becomes blurry, also I try use ai file and get same result (enable collapse transformations + 3d layer = blurry line), don't know how to fix this problem. Fun fact if I use ai file (with 100% scale) and enable only collapse transformations or 3d layer switch, no problem, but if turn on both, agai blurry line. I have latest After Effects 2021(18.0.1).

[Rick Gerard]

Do you have a camera in the comp? Is the depth of field enabled? 

Have you tried a 1-pixel stroke viewed at 800%? There is a slight difference in antialiasing when you change to a 3D layer, and scaling up the layer even 1000% will only show a slight aliasing difference, but it would be completely different if continuous rasterization is turned off. By the way, you cannot turn Continuous rasterization off with shape layers or text layers.

[Polyflow]

Composition without camera. I think problem not in stoke, problem with edges. Here I created example, left square without 3d, right with 3d. Also I tried AE 2020 version, same problem.

[Polyflow]

Here, better screenshot.

[Ali Jaber · Accepted solution]

Tried to create the same shapes and I've got the same result as yours, it's very subtle and I don't think the viewers will notice that unless it's used as a still picture, but yes there is a blurry edge for the 3d layer. It looks like a limitation in the Classic 3D render engine.

[Polyflow]

I tried Cinema 4D engine and blur gone, definitely restriction in Classic 3D engine.