Villagers are causing significantly more lag when told to stay, over when allowed to move freely, as profiled with Observable. Possibly related to job blocks, per #72, as the villager in question was emitting green particles.

Staying

.

Moving Freely

Profile of a Staying Villager

This is on a multiplayer server running the TownCraft for 1.18.2 pack.
minecraft-comes-alive-7.3.3+1.18.2-forge

We won't be able to keep it in the pack if not resolved as the pack is meant for a high population server.