NPCs (humans) not showing up in the North

Playstation 4 Pro

Game mode: Single player
Problem: NPCs not loading
Region: North, New Asagard

After entering the northern area after being away for a while, the humans and some of thier buildings never load and are just not there. The animals are though (wolfs, mammoth, etc…) Its just the humans, all around the New Asagarth area.

Repro steps:

  1. Collect Underpants
  2. Profit
  3. Repeat step 2