5.1 laundry list of problems

I’ve recently updated a 5.0A project to 5.1 and noticed some additional problems.

1: Changing the world scale does no longer seem to work.

2: Shading issues with concave faces. Concave surfaces look like they have ‘hard normal edges’ when viewed from a bit further away (like 4m).
There are multiple large concave surfaces in my level, making this one very obvious.
It’s a VR Project, so both Lumen and Nanite are not being used. (GI and Reflections are set to None, GPU Lightmass has been baked with Iradiance Caching on as it’s an interior scene.)

hard_edges_01
hard_edges_02