Memory leak appears present when exploring the map.
When first launching the game, it utilizes less than 2000mb of memory, once in the game and exploring for a short while, it will reach 3000-4000mb. After about an hour of repeated travel, that number will reach 5000+mb. At that point, the game becomes incredibly unstable and can crash at any moment. I have been restarting the game when I reach around 4500mb of memory usage to prevent crashes.
Memory leak/usage seems correlated to exploring the map. If I stay in the same area, the memory usage does not rise to unstable levels.