Probably not a big deal, but something to investigate

[21:03:28] [Server thread/WARN] [FML]: ToroQuest loaded a new chunk (9, -12 Dimension: 0) during chunk population, causing cascading worldgen lag. Please report this to the mod's issue tracker. This log can be disabled in the Forge config.

I think this is caused by a dungeon generation, I haven't proved it though.

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