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[DogsRNice]

im getting huge lag spikes down to 1 fps in dwarf fortress looking at the cpu usage it goes down to idle levels some of the spikes have even resulted in dwarf fortress becoming unresponsive for up to 3 minutes i have tried restarting my computer and closing every program but it stays even in menus
sorry if this is the wrong section

[Garath]

fine section. Several things can be happening. One, spring or winter may arrive, causing stuff to freeze or melt. This usually caused a big lag for just that moment. Second, if you have seasonal saves on, the game may freeze up at the changing of the seasons while saving. Third, a FB may hide in the caverns that has some special ability or consistency that causes problems in water. A fire based one, for example, will generate huge steam cloads. I had troubles with one with noxious fumes creating lag any time it entered a cavern lake.

There may be some other issues too, but these are the first ones I could think of