We have a Realm for 10 people only 3 people play on it, two on the Xbox one and one on the Nintendo Switch. Server runs smoothly until we start curing Villagers. We restored to a previous file and things were good until once again we cured villager zombies
It seems the issue is more noticeable with 3-4 cured villagers. All three of us play from the same network in one household. We don't always play alone but the problem is persistent once the villagers have been cured, even after killing the npc villagers.