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IDProjectCategoryView StatusLast Update
0013424Dwarf FortressDwarf Mode -- Combatpublic2026-01-07 18:00
ReporterAndromay Assigned To 
PrioritynormalSeveritymajorReproducibilityalways
Status newResolutionopen 
PlatformSteamOSLinux 
Product Version53.09 
Summary0013424: Extreme lag spikes when magma crabs fight
DescriptionWhenever a magma crab that has weaseled its way into my fort starts a fight, my FPS drop significantly. FPS drop to/below 1 frame per second at times. I have to wait for my dwarfs to kill the magma crab, which takes a while at that frame rate, rendering the game basically unplayable for multiple minutes.

I have noticed that my frame rate crashes down mostly when the crabs spit globs of liquid basalt and the projectile flies through the air. Sometimes my FPS recover shortly before the crab is killed, maybe because the magma crab doesn't spit globs anymore?
Steps To ReproduceHave a magma crab fight (apparently maybe more precisely spit a glob of liquid basalt)
Additional InformationMy population is above 200. Last incident was at 219 pop, other incidents were below that. FPS normally are at ~ 95 to 100 with no issues.

Other combats do not cause any lag issues.

The world was created in a version before 53.09. I do not know what version though.
Tagslag, magma crab

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Issue History

Date Modified Username Field Change
2026-01-07 18:00 Andromay New Issue
2026-01-07 18:00 Andromay Tag Attached: lag
2026-01-07 18:00 Andromay Tag Attached: magma crab