Trying to clear gates, killing monsters -- instead of just dying -- they vanish -- along with the loot. Eventually, the game just crashes.

I've read from various posts that it's a loot bag issue. I apparently... didn't pick up every loot bag and they've accumulated to the point that the game cannot handle it and crashes.

It's times like this I wish every game was moddable, so I could script a fix (delete * from LOOT_BAG_TABLE). Stuck until someone fixes this.