Help rendering displacement! Jagged final image

[TimberKing]

Trying to render a surface with a simple gradient for displacement map. The resulting image shows jagged edges. This has stumped me before, really hoping there is a simple solution.

[gadzooks]

Increasing edge length perhaps. Should be the same across all software platforms.

[TimberKing]

Increasing edge length

Tried a range, no difference in the result.
I also tried rebuilding the map as an uncompressed TIFF instead of JPEG.

[TimberKing]

As a troubleshooting idea I'd like to cut the displacement map out of the equation entirely since it could be some kind of sampling error. (maybe?)
Is there a way to create a repeating gradient using map options like "combine colour" "texture blend" and "checker"

[CityWrecker]

Underlying topology issue? All quads, nice and even? Try same test on a subdivided plane...

[glorybound]

subdivision works for me most of the time

[seandunderdale]

Youll get varied results if you use 8 / 16 / 32bit images. 8 bit will only work on things that are straight up and down mostly, like tyre wall text. Anything rounded will either need to built (or blurred) in16 / 32bit. Maps aside, youll want to lower your edge length, and up your subdivisions. Last project I did had view dependent on, in "normal" mode as opposed to 2d, 0.55 edge length, and 128 subdivisions. I was using ramps with noise to make my displacement, but even at those settings I still had some geo issues, but they were small enough to get away with.

I also made sure my base mesh had enough subdivisions. (Not just render time subdivisions)