Heya ! I'm losing my mind over this asset I'm trying to render in UE. I tried doing it a few months ago, and gave up since nothing I tried fixed the issue. I even had another thread and people helped a great deal, some of the solutions made it a little better, but most of the artifacts are still there. I redid my texture…
So turns out it was the simplest thing... At first I casually used the UE_Packed preset to export my textures from substance painter, which created artifacts. I don't know why or how, don't ask me :') I packed the maps myself in photoshop and it works fine now.