Hi everyone,
I realized there is a page for spawning of monsters, but nothing about despawning of items.
I thought the whole time nothing despawns (because i think in the range of buildings it indeed is blocked, however not verified)
Now i tested it and Items despawn after two hours.
Verified within render distance and out of range of buildings (workbench).
I could try to add that page but i am totally unskilled in that ;)