However some PS4 effects/shadows/whatever are in the PC version.
It's just resolution setting for shadows. "PS4-level" doesn't mean much in this respect since PCs are variable. 4k x 4K shadows is somewhat silly tbh since they don't seem to use even PCF, but I suppose they prefer very hard edged shadow maps (might as well just go with stencil). Even DOA4 had soft shadows.