Performance is dramatically decreased compared to other chunks inside this particular Dark Fortress-chunk. Movement takes much longer time due to CPU-crunching.

1. Continue adventurer on savefile, character spawns inside the slow chunk
2. Walk around, movement is much slower than usual.

I usually move ~30tiles per second. In this chunk I move ~3tiles per second. I'm not sure if this is due to a bug causing some CPU-crunching-mayhem or if Dark Fortresses are just way more intense than all the other sites. To me it seems broken.