Dwarf Fortress Bug Tracker - Dwarf Fortress
View Issue Details
0011623Dwarf FortressAdventure Mode -- Sitespublic2020-09-13 06:372020-09-14 21:11
neverending_cavein 
lethosor 
highmajoralways
needs feedbackopen 
0.47.04 
 
0011623: Visiting an abandoned fortress in adventurer mode causes exponential slowdown (FPS halved each time)
If you visit the same abandoned fortress multiple times in adventurer mode, FPS will be halved each time. It seems that when the items are randomly scattered, phantom items are left behind, and it also creates phantoms of phantoms. The phantom objects are saved in the save file, so the <1 FPS is permanent.
DF will eventually consume all memory and crash, provided that you manage not to die of boredom or old age.
If you have no items, or only items too heavy to be scattered, or everything is in the wagon, this glitch still happens; it just takes about 8 or so visits for the symptoms to start. That's thanks to another bug with item scattering, where items underground will be scattered even when you haven't breached the caverns and there isn't a cave entrance.

Somebody reported a bug that causes low FPS when an adventurer visits a retired fortress, but didn't say anything about it exponentially worsening, and if it's not exponential, it's not the same bug as this.
1. embark, spending all embark points on dice
2. disassemble the embark wagon
3. abandon
4. be an adventurer and visit the abandoned fortress several times
No tags attached.
Issue History
2020-09-13 06:37neverending_caveinNew Issue
2020-09-14 21:10lethosorNote Added: 0040733
2020-09-14 21:10lethosorAssigned To => lethosor
2020-09-14 21:10lethosorStatusnew => needs feedback
2020-09-14 21:11lethosorSeveritycrash => major

Notes
(0040733)
lethosor   
2020-09-14 21:10   
Do you have evidence of the item duplication that you're describing?
Do you have a save that reproduces the issue? If so, please upload it to http://dffd.bay12games.com/. [^] Reproducing this issue is likely to be time-consuming otherwise.