I’m sure this goes without saying, but wow those shots are incredible. Really inspirational stuff here, love everything about the scene so far. What kind of resolution textures are you using here? And I assume it’s baked lighting, not dynamic, right?
One thing I’m wondering is, are you running a sharpening post process on the later images? I don’t think I’ve ever seen the UE4 TAA get results that clear before, it’s usually a lot more blurry and just destroys any amount of detail.