UTeam Core loaded a new chunk (-9, -32 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.

https://www.reddit.com/r/feedthebeast/comments/5x0twz/investigating_extreme_worldgen_lag/

Since no mod is using the schematic generation now, i'll not try to fix this.
But this should definitly fixed.