The displacement texture details are disturbed in the highlight area
Is this a file texture? If so, it could be a UV or a projection issue. Show/tell us more about the scene.
Btw, you could avoid this issue by using a 3d shader like the cell_noise shader or by projecting the texture using a triplanar shader. Example here.
Yes, this is the file texture, the first image below is the displacement tex effect, and the second one is the normal tex effect, the normal map has some strange black spot shapes. The model has unfolded uv, and the scene uses the aces workflow.
Of course, now I've restored the detail in the highlights by making the area and spread of the light smaller. The only question now is how to make the texture cleaner. Thank you for your reply.
For super crisp bump you might want to approach this with microfacet normal mapping..
https://www.rombo.tools/2020/06/19/microfacet-based-normal-mapping/
No displacement used, better seen at full rez.
Another approach might be this one where we use a discrete reflection model to break up continuosly smooth highlights so the more you zoom in the more you gain detail (instead to lose it with a blocky or too smooth appearance).
https://www.rombo.tools/portfolio/spanish-leather-boots/
These are two main problems in CG shading but because there ain't a general common understanding of them you might fail to understand them completely or you might fail to be convinced that you need other ways to approach these.. of course a lot can still be done in your case with a classic approach but the fundamental flaws would still persist.
