Zombie Lag Fix
by baraclese
Zombie Lag Fix changes how zombies recalculate their routes, which reduces server load when many zombies are active at once.
What it does
The mod throttles pathfinding for zombies on Legacy Fabric. Instead of recalculating a path every tick, each zombie updates its route at a slower interval, cutting most of the CPU time spent on path recalculation for entities that chase a target. The mod runs on the server alone, so players join without installing anything. Files are published for Legacy Fabric 1.6.4 only, with 1.0.1 as the latest file from 2022-11-29, and the source code is released under the CC0 1.0 Universal license.
Key features
Throttled path updates
Zombie route recalculation runs less often, lowering the CPU cost of crowds chasing a target.
Lower CPU use on busy worlds
Most of the reduction comes from fewer path calculations for entities that follow a moving target, such as villagers.
Server-side operation
Only the server needs the mod, so clients can join without installing it.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Questions
Does Zombie Lag Fix need to be installed on the client?
Which game version does Zombie Lag Fix support?
In the catalog
Zombie Lag Fix is one of 3,545 Optimization mods on ModsFinder. 328 mods support Minecraft 1.6.4.
More from baraclese
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What the author says
A legacy fabric mod that uses the pathfinding throttling code from 1.9.4 to reduce lag caused by zombie pathfinding. Most of the reduction in CPU usage stems from not recalculating paths if the targeted entity (for example a villager) is not moving.
Official listing
- Modrinth page
- modrinth.com/mod/zombie-lag-fix
- Owner
- baraclese
- Published
- 2022-11-05
- Updated on Modrinth
- 2022-11-29
- Facts verified
- 2026-10-15