Game lags when a villager spawns in a village

Whenever I spawned a villager or when I entered the village on a world, the world freezes and lags the game while villagers appeared in this village. Can anyone help fix the issue about villagers?

Steps to Reproduce:
When spawning a Villager:

1. Spawn a Villager using a Villager Spawn Egg
2. The Villager appears in the Village
3. The game lags when the villager appears
4. The game lag stops after a few minutes of lag time, letting the ticks to catch up

When entering a Village:

1. The Villager appears in the Village
2. The game lags when a villager appears
3. The game lag stops after a few minutes of lag time, letting the ticks to catch up

Other Impacts:

• After the game lag stops, a player will not be able to attack zombies (even drowneds, husks, zombie villagers, and many illagers) when catching up while ticks are loading. Unfortunately, the zombie will kill the villager when the ticks are still catching up.