Item Clumps is a Vintage Story mod by sneezerstein. Item Clumps combines nearby dropped items into one entity and lets you collect whole stacks at once, reducing the number of ground items the game must process.

Why this mod is worth installing
This QoL tweak is useful for players and server owners who deal with large item drops, farms, or busy storage areas. It can make item-heavy scenes easier for both the client and server to handle.
What Item Clumps adds
Item Clumps changes how dropped item entities are represented in the world. Nearby items are grouped into a single clump instead of remaining as many separate entities, which reduces the amount of individual ground objects the game needs to update.
The grouping is especially helpful after harvesting, mining, clearing an inventory, or collecting loot in one place. When a clump contains multiple items of the same kind, you can pick up the available stack together rather than collecting every small drop separately.
Where to download Item Clumps
The official Vintage Story Mod DB page is the right place to get the current release through the in-game mod manager.