cascading worldgen lag

```
[17:47:16] [Server thread/WARN] [FML]: Craftomancy loaded a new chunk [26, -37] in dimension 0 (overworld) while populating chunk [27, -37], causing cascading worldgen lag.
[17:47:16] [Server thread/WARN] [FML]: Please report this to the mod's issue tracker. This log can be disabled in the Forge config.
```