Source: https://github.com/vbnet3d/SpawnSleepersInRange
Experimental mod for 7 Day to Die (Alpha 21) that forces sleeper volumes to spawn in sleepers within a certain range, even if the trigger is not yet activated. Intended to fix issues with pop-in spawning and clear quests failing to spawn in all zombies.
This is an entirely experimental mod. Use at your own risk. May affect frame rates if it spawns in too many zombies at one time. I would not recommend using on a server unless you've benchmarked it's affects on your FPS in solo.
Configuration
Mod options can be changed by editing Config.xml in the mod folder.
Installation
Download source to your 7 Days to Die mod folder (usually C:\Program Files (x86)\Steam\steamapps\common\7 Days To Die\Mods).
This is a Harmony (C#) mod. EAC must be disabled.