Hi!
If you have taken over a house or castle and then saved/loaded your game you may have noticed that the monsters you killed are back again. I'm working on a fix for that right now.
Optimized world generator and memory usage. I'm always working on optimizations and in v5 I will include the latest progress in this area.
Some tools you find in chests and drawers are unusable because they have invalid material combinations. This is also fixed in v5.
best regards
Jens