diff --git a/main/texture_sampling_policy.gd b/main/texture_sampling_policy.gd
index 822299c..35a92a0 100644
--- a/main/texture_sampling_policy.gd
+++ b/main/texture_sampling_policy.gd
@@ -15,8 +15,12 @@ func _enter_tree() -> void:
 func _on_node_added(node: Node) -> void:
 	enforce_node(node)
 	# Some runtime presenters assign their mesh or material immediately after
-	# add_child(). Recheck once deferred so those resources are covered too.
-	call_deferred("_enforce_deferred_node", weakref(node))
+	# add_child(). Recheck those 3D resource owners once deferred so the newly
+	# assigned resources are covered too. CanvasItems keep their filter setting
+	# when their texture changes, so deferring every dynamic UI node only floods
+	# the message queue during large inventory and catalog refreshes.
+	if _needs_deferred_resource_check(node):
+		call_deferred("_enforce_deferred_node", weakref(node))
 
 
 func _enforce_existing_tree() -> void:
@@ -29,6 +33,15 @@ func _enforce_deferred_node(node_ref: WeakRef) -> void:
 		enforce_node(node)
 
 
+static func _needs_deferred_resource_check(node: Node) -> bool:
+	return (
+		node is GeometryInstance3D
+		or node is MultiMeshInstance3D
+		or node is GPUParticles3D
+		or node is CPUParticles3D
+	)
+
+
 static func enforce_subtree(node: Node) -> void:
 	enforce_node(node)
 	for child: Node in node.get_children():
diff --git a/tests/economy_regression_validation.gd b/tests/economy_regression_validation.gd
index ec80d1b..ff82495 100644
--- a/tests/economy_regression_validation.gd
+++ b/tests/economy_regression_validation.gd
@@ -31,9 +31,14 @@ func _run() -> void:
 	for _frame: int in 8:
 		await process_frame
 	assert(bool(main.get("_application_initialized")))
+	var session := main.get_node("%NetworkSession") as NetworkSession
+	assert(bool(main.call(
+		"_apply_world", WorldLayout.STARTER_ISLAND, 1, true
+	)))
+	assert(session.set_host_world(WorldLayout.STARTER_ISLAND, 1))
 	assert(bool(main.call("_prepare_private_host")))
 	var save_manager := main.get("_save_manager") as PlayerSaveManager
-	assert(save_manager.initialize_new_game())
+	assert(save_manager.initialize_new_game(1, WorldLayout.STARTER_ISLAND))
 	main.call("_enter_gameplay")
 	for _frame: int in 8:
 		await process_frame
@@ -42,7 +47,6 @@ func _run() -> void:
 	var catalog := main.get("fish_catalog") as FishPool
 	var sale_service := main.get_node("%NetworkSaleService") as NetworkSaleService
 	var shop_service := main.get_node("%NetworkShopService") as NetworkShopService
-	var session := main.get_node("%NetworkSession") as NetworkSession
 	var reservations := (
 		main.get_node("%PlayerAssetReservationService")
 		as PlayerAssetReservationService
@@ -554,7 +558,10 @@ func _test_host_backpack_purchase(
 	for expected_capacity: int in [18, 27, 36]:
 		_shop_result.clear()
 		assert(not shop_service.request_backpack_capacity_upgrade().is_empty())
-		assert(not _shop_result.is_empty() and bool(_shop_result[1]))
+		assert(
+			not _shop_result.is_empty() and bool(_shop_result[1]),
+			"Backpack purchase failed: %s" % [_shop_result],
+		)
 		assert(layout.get_inventory_capacity() == expected_capacity)
 	assert(player.wallet.get_balance() == balance_before - total_cost)
 	assert(layout.get_next_backpack_cost() == -1)
@@ -575,7 +582,10 @@ func _test_host_storage_purchase(
 	for expected_capacity: int in [18, 27, 36, 45, 54, 63, 72]:
 		_shop_result.clear()
 		assert(not shop_service.request_cooler_capacity_upgrade().is_empty())
-		assert(not _shop_result.is_empty() and bool(_shop_result[1]))
+		assert(
+			not _shop_result.is_empty() and bool(_shop_result[1]),
+			"Cooler purchase failed: %s" % [_shop_result],
+		)
 		assert(capacity.get_capacity() == expected_capacity)
 	assert(player.wallet.get_balance() == balance_before - total_cost)
 	assert(capacity.get_next_cost() == -1)
diff --git a/tests/gathering_showcase_validation.gd b/tests/gathering_showcase_validation.gd
index 7099f7c..51d6f38 100644
--- a/tests/gathering_showcase_validation.gd
+++ b/tests/gathering_showcase_validation.gd
@@ -21,9 +21,13 @@ func _run() -> void:
 	assert(bool(main.get("_application_initialized")))
 
 	var session := main.get_node("%NetworkSession") as NetworkSession
+	assert(bool(main.call(
+		"_apply_world", WorldLayout.STARTER_ISLAND, 1, true
+	)))
+	assert(session.set_host_world(WorldLayout.STARTER_ISLAND, 1))
 	assert(session.start_private_host(TEST_PORT))
 	var save_manager := main.get("_save_manager") as PlayerSaveManager
-	assert(save_manager.initialize_new_game())
+	assert(save_manager.initialize_new_game(1, WorldLayout.STARTER_ISLAND))
 	main.call("_enter_gameplay")
 	for _frame: int in 8:
 		await process_frame
@@ -38,7 +42,7 @@ func _run() -> void:
 		and game_ui != null
 		and catalog != null
 	)
-	fishing_spot.minimum_showcase_duration = 0.15
+	fishing_spot.minimum_showcase_duration = 1.0
 	assert(player.bag.add_item(&"crab_net"))
 	assert(player.hotbar.assign_item(0, &"crab_net"))
 	assert(player.hotbar.select_slot(0))
@@ -81,7 +85,7 @@ func _run() -> void:
 	await process_frame
 	assert(fishing_spot.get("_pending_catch") == crab_catch)
 	Input.action_release("fish_primary")
-	await create_timer(0.2).timeout
+	fishing_spot.set("_showcase_input_lock_remaining", 0.0)
 	await process_frame
 	assert(bool(fishing_spot.get("_put_away_press_armed")))
 	Input.parse_input_event(pocket_event)
diff --git a/tests/job_system_validation.gd b/tests/job_system_validation.gd
index 89e46f6..65b7164 100644
--- a/tests/job_system_validation.gd
+++ b/tests/job_system_validation.gd
@@ -21,13 +21,17 @@ func _run() -> void:
 	assert(bool(main.get("_application_initialized")))
 	var session := main.get_node("%NetworkSession") as NetworkSession
 	assert(session != null)
+	assert(bool(main.call(
+		"_apply_world", WorldLayout.STARTER_ISLAND, 1, true
+	)))
+	assert(session.set_host_world(WorldLayout.STARTER_ISLAND, 1))
 	var occupied_port := PacketPeerUDP.new()
 	assert(occupied_port.bind(18137, "127.0.0.1") == OK)
 	assert(session.start_private_host(18137, 3))
 	assert(session.get_host_port() == 18138)
 	occupied_port.close()
 	var save_manager := main.get("_save_manager") as PlayerSaveManager
-	assert(save_manager.initialize_new_game())
+	assert(save_manager.initialize_new_game(1, WorldLayout.STARTER_ISLAND))
 	main.call("_enter_gameplay")
 	await physics_frame
 	await physics_frame
diff --git a/tests/surface_drawing_runtime_validation.gd b/tests/surface_drawing_runtime_validation.gd
index e04afc2..85110cd 100644
--- a/tests/surface_drawing_runtime_validation.gd
+++ b/tests/surface_drawing_runtime_validation.gd
@@ -20,9 +20,13 @@ func _run() -> void:
 		await process_frame
 	assert(bool(main.get("_application_initialized")))
 	var session := main.get_node("%NetworkSession") as NetworkSession
+	assert(bool(main.call(
+		"_apply_world", WorldLayout.STARTER_ISLAND, 1, true
+	)))
+	assert(session.set_host_world(WorldLayout.STARTER_ISLAND, 1))
 	assert(session.start_private_host(TEST_PORT))
 	var save_manager := main.get("_save_manager") as PlayerSaveManager
-	assert(save_manager.initialize_new_game())
+	assert(save_manager.initialize_new_game(1, WorldLayout.STARTER_ISLAND))
 	main.call("_enter_gameplay")
 	await physics_frame
 	await physics_frame