People really signing up for the terrible pop in defense force? REALLY?
CDPR cementing their place as king of the jank.
I don't think it's pop-in. It seems like overly aggressive occlusion culling, not for performance but for preventing foliage objects from obscuring combat.
There are some pretty dense forests so I can see why something like this might be necessary. It's a shame that it doesn't seem smartly implemented, though; It should probably have some knowledge of the density of the surrounding objects before deciding if culling objects is even worth it.