I'm in a fortress with 98 dwarves, 5x5 area. I'm getting around 20 FPS. Right around the time an elven caravan showed up, it dropped to around 10, often going below. It also decided to go through my fort to the trade depot, which involves going to the left and making a half circle around my trade depot through a few doorways and my statue hall, which takes around 28 steps when they could have just gone to the right and straight up to the trade depot, which takes around 13 steps and has caravan-friendly walkways. As soon as both merchants got to my trade depot, my FPS went back up to around 20ish. Obviously the elves are confused.
I'll even attach a picture.
Green is the path they took. Magenta is the path they should have taken.
Edit: Apparently I offended them to the point of them leaving by accidentally offering them two pieces of leather, and almost as soon my FPS halved again. Though it was slowed for some time after they left, so maybe the traders aren't completely to blame. They also took the short path out this time.
Edit 2: Looks like I had attached some gears in the wrong order, causing a burst of two screw pumps to start for a short time (not enough power to go around), so I'm thinking that was probably the cause of my FPS issue.
Also, on an unrelated note, disabling "active" on my garbage dump and designating a new "active" garbage dump, they still dump everything in my first one.
And I'm getting tired of spam caused by dwarves apparently eating/drinking stuff that's in the kitchen while the cook is gathering four items, resulting in job item lost or destroyed.
Okay, so those last two are very minor annoyances that I want to gripe about but am too lazy to spam new threads. But still.
[ December 17, 2007: Message edited by: ein Syndication ]