Have been playing with a friend, and yesterday we found what we can only assume is a bugged chest in the cavern with fire slimes — it contained a 100M gold. https://i.imgur.com/VKNTsgP.png
Now, that isn't that hard to ignore, but the real issue came up today. Every save made after opening said chest took a long time to load and, upon loading, suffered from severe memory leak and high CPU use, leading up to game crashing. That gold was the root of that, since gifting it to an NPC after suffering through crashes seemed to solve the issue.