https://pastebin.com/hdaPGHnh

Removing of the potential culprit results in hanging.

latest.log

Of note is that super flats work fine.

This is related to Rusticated.

cScotPlay/Rusticated#13

@Juuxel

Hmm, Rusticated breaks since my pine forests are in both is_taiga and is_forest, so it adds the same feature twice.

https://github.com/cScotPlay/Rusticated/blob/33b0c806b93af964653c79985af3d602cff97e82/src/main/java/net/mcs3/rusticated/world/level/levelgen/generation/VegetationGeneration.java#L28-L29

I'm going to see if the dev forgot about this.

I've also brought this up in the world gen mod dev discord @Juuxel

I have sent over a PR to them that will fix it. They will need to merge it.