Basically every material seems flat.
At first I thought I was importing wrong, but trying out substance launcher and it does the same thing with imported substances.
The attached image is supposed to be the stylized norfolk terracotta but it's really flat in substance painter.
If it helps I noticed recently every imported material uses the pbr metal rough shader for some reason.
Edit: Seems like it was a bug with substance painter that went away after a reinstall. Height map working better now