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(Leash Knot, Glow Item Frame, Item Frame, Painting): 800 within a 2 block radius
Projectiles(Lingering Potion, Fireball, Small Fireball, Llama Spit, Fishing Bobber, Splash Potion, Breeze Wind Charge, Wind Charge, Wither Skull, Dragon Fireball, Egg, Shulker Bullet, Trident, Firework Rocket, Experience Bottle, Arrow, Snowball, Ender Pearl, Spectral Arrow): 35 within a 5 block radius
Bosses(Warden, Wither): 5 within a 15 block radius
Laggyvillagers(Wandering Trader, Pillager, Villager): 18 within a 5 block radius
Farmable(Pig, Shulker, Iron Golem, Rabbit, Armadillo, Frog, Cat, Slime, Camel, Copper Golem, Bee, Mooshroom, Sheep, Sniffer, Llama, Trader Llama, Skeleton Horse, Horse, Turtle, Snow Golem, Chicken, Cow, Parrot, Strider, Axolotl, Fox, Polar Bear, Happy Ghast, Ocelot, Magma Cube, Hoglin, Wolf, Donkey, Goat, Panda, Zombie Horse, Mule): 15 within a 5 block radius
Monsters(Ravager, Enderman, Endermite, Skeleton, Wither Skeleton, Breeze, Piglin Brute, Vex, Zombie Villager, Silverfish, Vindicator, Drowned, Zombie, Blaze, Piglin, Creeper, Zoglin, Bogged, Husk, Spider, Zombified Piglin, Illusioner, Stray, Elder Guardian, Giant, Creaking, Guardian, Witch, Evoker, Cave Spider): 15 within a 5 block radius
Watermobs(Pufferfish, Tadpole, Salmon, Tropical Fish, Glow Squid, Dolphin, Squid, Cod): 10 within a 5 block radius
Mobs(Bat, Phantom, Allay, Ghast): 30 within a 5 block radius
Fallingblock(Falling Block): 30 within a 5 block radius
Explosive(Tnt, End Crystal): 30 within a 5 block radius
Vehicles(Spruce Chest Boat, Birch Boat, Acacia Chest Boat, Jungle Chest Boat, Hopper Minecart, Tnt Minecart, Pale Oak Chest Boat, Spruce Boat, Birch Chest Boat, Furnace Minecart, Bamboo Chest Raft, Chest Minecart, Acacia Boat, Dark Oak Chest Boat, Spawner Minecart, Mangrove Boat, Cherry Chest Boat, Oak Chest Boat, Jungle Boat, Command Block Minecart, Cherry Boat, Oak Boat, Pale Oak Boat, Dark Oak Boat, Mangrove Chest Boat, Bamboo Raft, Minecart): 40 within a 8 block radius
Uncategorized(Item Display, Interaction, Marker, Mannequin, Text Display, Lightning Bolt, Eye Of Ender, Ominous Item Spawner, Area Effect Cloud, Evoker Fangs, Block Display): 150 within a 7 block radius