Hej, thank you for reply. But it` not depends from reflection capture resolution in project settings. I have 2048 and highter resolutions crashing Unreal. Problem with method of bluring reflections on glossy materials. I have super sharp reflections on 0 rougness but in 0.1 roughness they are pixelated like on screenshot… All i found is that UE generating mipmaps from reflection cubemaps for glossy materials, but this mipmaps are so poor, i cant find where i can change it.