I'm tempted to almost ignore it honestly, because you gotta zoom it to see it if there is any noise there

when those are created in a 2D editor we're told in the tutorials that we should have 4 pixels wide at the top.. then we transition in a 1X2 line coming down..

its great on top with the settings I can force the pixels to just this as the image shows below

Hoever on the bottom of that ligher region we dont start with a 1X2 transition. So when these mesh with neighboring tiles.. we see that dark poking through on the side sufaces of the block. on thart 1 pixel error.

we start with a 1X1 tranition.. so that one error kinda ruins the whole line. we see a dotted line (second image ) at the transition.

Still working on it..

Mostly fixed it by applying within blender a pixel filter (Render settings => film => filtersize) and a little overscan in the same area which further ditheres or antialiases the edges of the render. Increased the field of view of the object by tweaking "Orthographic Scale" so the gutter, and margins are within each frame instead of applied after. (we get the entire image this way)

Then just cramming them into eachother till that antialiased edges kinda blend together.

Not perferfect but improved for sure.

If you squint.. you can still see it while zoooomed way in.. at scale ya cant see it at all.