I found in version 4.27 it was very grainy and had some clipping issues with some materials at certain plane clip ranges, can’t say i have tried it in version 5.3.2 as getting some meshes and textures to work is still a problem with when using assets from other editors, It’s a little like Daz3D’s Iray Render but much quicker, takes some tinkering to set it correctly, it does make a difference on some maps overall quality but at a huge cost on memory when using high poly assets.