Minecraft Performance Optimization Checklist

= 6 (small server) = 8 (medium server)

Reduces the number of chunks loaded per player. The single biggest TPS improvement — each ring added is exponentially more work.

= 4 (small) = 6 (medium)

Controls how far from players entities tick, crops grow, and redstone runs. Lower than view-distance for best performance without visible lag.

= true

Distributes mob caps evenly per player instead of globally — dramatically reduces mob overcrowding on servers with uneven player spread.

= ALTERNATE_CURRENT

Alternate Current is a highly optimized redstone implementation. Fixes update order bugs AND reduces redstone lag significantly.

= 35 (was 70)

Halving the global monster spawn cap reduces entity processing load without noticeably affecting gameplay feel for most servers.

= 32 (was 48)

Mobs outside this range are ticked less frequently. Reduces entity AI overhead from mobs players can't even see.

= 8

Caps how many entities can collide with each other at once. Stops entity pileups from tanking TPS.

= true = 1

Engine mode 1 hides ores behind solid blocks server-side. Very low performance cost and stops most x-ray clients.

= false

Treasure map generation explores unloaded chunks to find structures — a well-known cause of sudden lag spikes when players craft or trade them.

= true

Configure specific items (like cobblestone) to despawn faster than the default 5 minutes, reducing ground entity count.

= 2.5

Merges dropped item entities within this radius into stacks. Fewer entities = less processing every tick.

= 3.0

Merges nearby XP orbs into larger ones. XP orbs are surprisingly expensive — merging them is an easy win.

= true

Mobs from spawners won't pathfind when no player is nearby. Reduces CPU usage from mob farms when no one is watching.

= 6 (was 8)

Mobs spawn closer to players — less spread-out mob processing while keeping spawn rates acceptable.

= 2 (was 1)

Runs mob spawn checks every 2 ticks instead of every tick. Halves spawning overhead with minimal impact on mob count.

= 300 (was 600)

Unloads unused chunks more frequently, keeping memory usage lower on servers with lots of player movement.

= 20

Stops entity processing if it exceeds this many milliseconds per tick, preventing a runaway entity from killing your TPS.

= 28 (hard = 96)

Mobs beyond soft range have a chance to despawn — keeps entity count from growing without bound in loaded chunks.