SSR weirdness in HDRP

Unity Engine
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1

I’ve noticed a problem with SSR in all HDRP versions so far up to 6.9 (I haven’t tested 7.0). I’m using Unity 2019.2f1 now

There’s often a weird curvature in the reflections, as seen on the floor in those images:

Screenshots

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If you look at the refection of the big arches on the floor, they seem to have a weird spherical distortion to them. Is this an intentional limitation of SSR, or bad settings/UVs on my end, or is it a bug?

(and if you want to look at it in realtime you can download it here: ArenaShooter Prototype by Phil_SA )

2

Update:
I found the culprit. I selected “Calculate” for the normals in the mesh import settings of my environment instead of “Import”. Now the weird curvature is gone

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Any ideas about the sort of export settings I should be worried about in order to export proper normals? (using Blender, if that matters)