I encountered a problem that caused the AI to stop working. My settlers completely stopped moving, the game also could not be saved once this happened.
I have 8GB of memory, 20% was still free. Stonehearth was using roughly 2 GB of that memory.
Any other details you may need, just request and I will try and fill you in where I can.
When the worlds save file is first loaded a second Stonehearth process opens starting at 1GB - 1.1GB