I copied a 4.24.3 project to 4.25 then 4.25.1 to test these new versions and RTX (I have a 2070 GPU on my system). I ran into an issue that I do not understand thus cannot solve.
On a specific shader I have an unwanted sparkling kind of effect and do not know how to soled this. It doesn’t happen in 4.24.3…
My shader is pretty basic, with map directly plugged in color, normal, roughness and AO plus a constant in specular (tried also in metallic)
[video]http://www.cyrilgregoire.info/dl/GT - Unreal Editor 2020-06-05 21-02-48.mp4[/video]
Any idea ?