Collective is a shared library with common code for all of Serilum's mods. It also optimises multiple mods using the same event by combining them.
The config values usually don't have to be changed, unless you experience issues with the current configuration. And if that's the case, I'll have to change something :) But of course feel free to tweak it to your own preferences.
transferItemsBetweenReplacedEntities (default = true): When enabled, transfer the held items and armour from replaced entities by any of the Entity Spawn mods which depend on Collective.
loopsAmountUsedToGetAllEntityDrops (default = 100, min 1, max 200): The amount of times Collective loops through possible mob drops to get them all procedurally. Drops are only generated when a dependent mod uses them. Lowering this can increase world load time but decrease accuracy.
findABlockcheckAroundEntitiesDelayMs (default = 30000, min 0, max 3600000): The delay of the is-there-a-block-around-check around entities in ms. Used in mods which depends on a specific blockstate in the world. Increasing this number can increase TPS if needed.