EldritchCellar posted at 7:27PM Sat, 30 May 2020 - #4390621

Do you have smoothing enabled in your render settings and in object properties?

Are the models constructed with control loops or are they unwelded?

Turning off smoothing made no difference. The models are standard box modelling objects; no ngons, no double verts. Part of the first object isn't welded to the rest, but this same issue affects the second object as well, which is welded.