Navmesh paths are broken due to heavily modified map geometry, or the script failed to register the player's position.
Start small. Get 20 zombies running smoothly. Add an infection script. Then scale your map edits and player count. The apocalypse isn’t built in a day—but with the right files and this guide, you’ll have survivors logging in before the week is out. fivem zombie server files
There are many FiveM zombie scripts available, each with its own unique features and gameplay mechanics. Here are some popular ones: Navmesh paths are broken due to heavily modified