Mob Limits

Limits on Large Groups of Mobs.

To optimize server performance, large clusters of mobs are regulated.
Entities are not limited per chunk but are limited by their group (see below).
Groups of mobs that exceed the limit are periodically identified and culled,
exempting those with special characteristics like being a custom mob or tamed.
When a mob is removed, you will see a smoke effect.

For example, if the limit is 10 mobs within 5 blocks, it will group all mobs in the same group
that are less than 5 blocks from each-other into one large group and remove the excess mobs.

If you wanted to have more than 10 mobs in this example, you need to have at least 5 blocks
between your groups to prevent them being counted as one group.

Mob limits:
Armorstands(Armor Stand): 30 within a 10 block radius
Xporb(Experience Orb): 50 within a 3 block radius
Items(Item): 500 within a 2 block radius
Hanging(Glow Item Frame, Leash Knot, Item Frame, Painting): 800 within a 2 block radius
Projectiles(Snowball, Breeze Wind Charge, Wind Charge, Dragon Fireball, Spectral Arrow, Egg, Experience Bottle, Splash Potion, Ender Pearl, Llama Spit, Fireball, Shulker Bullet, Wither Skull, Lingering Potion, Trident, Small Fireball, Firework Rocket, Fishing Bobber, Arrow): 35 within a 5 block radius
Bosses(Wither, Warden): 5 within a 15 block radius
Laggyvillagers(Wandering Trader, Pillager, Villager): 18 within a 5 block radius
Farmable(Skeleton Horse, Bee, Horse, Sniffer, Wolf, Axolotl, Pig, Iron Golem, Cat, Polar Bear, Sheep, Turtle, Hoglin, Ocelot, Fox, Frog, Panda, Parrot, Shulker, Camel, Mule, Magma Cube, Chicken, Strider, Armadillo, Happy Ghast, Zombie Horse, Mooshroom, Llama, Donkey, Trader Llama, Slime, Snow Golem, Cow, Goat, Rabbit): 15 within a 5 block radius
Monsters(Illusioner, Piglin, Zombie, Breeze, Zombified Piglin, Cave Spider, Silverfish, Piglin Brute, Zoglin, Ravager, Vindicator, Bogged, Drowned, Enderman, Giant, Elder Guardian, Evoker, Vex, Stray, Witch, Endermite, Guardian, Husk, Skeleton, Wither Skeleton, Blaze, Spider, Creaking, Creeper, Zombie Villager): 15 within a 5 block radius
Watermobs(Squid, Glow Squid, Salmon, Pufferfish, Cod, Tropical Fish, Dolphin, Tadpole): 10 within a 5 block radius
Mobs(Allay, Ghast, Phantom, Bat): 30 within a 5 block radius
Fallingblock(Falling Block): 30 within a 5 block radius
Explosive(End Crystal, Tnt): 30 within a 5 block radius
Vehicles(Jungle Chest Boat, Birch Boat, Mangrove Chest Boat, Tnt Minecart, Chest Minecart, Birch Chest Boat, Jungle Boat, Mangrove Boat, Pale Oak Boat, Spruce Chest Boat, Oak Chest Boat, Spawner Minecart, Minecart, Cherry Boat, Hopper Minecart, Bamboo Chest Raft, Furnace Minecart, Spruce Boat, Acacia Chest Boat, Command Block Minecart, Oak Boat, Pale Oak Chest Boat, Bamboo Raft, Cherry Chest Boat, Acacia Boat, Dark Oak Boat, Dark Oak Chest Boat): 20 within a 5 block radius
Uncategorized(Evoker Fangs, Marker, Text Display, Area Effect Cloud, Interaction, Eye Of Ender, Item Display, Lightning Bolt, Ominous Item Spawner, Block Display): 150 within a 7 block radius