ZBrushCentral

Problem with importing udim displacement map

Hi people.

I have some artifact edge side with import displacement map.
so, I check my model’s uv first.
they have plenty space of uv edge, and uv island.

second, I checked my zbrush model has smothed uv.
It also dosen’t work.
So now, I have no clue for correct it.

any idea to fix it?

I used 8k map and 6 udims.

here is my viewport captured video.

https://www.youtube.com/watch?v=sUMD2UnP0Ms