diff --git a/PlotLine/Sql/025_AssetTimelinePerformance.sql b/PlotLine/Sql/025_AssetTimelinePerformance.sql
new file mode 100644
index 0000000..34120d9
--- /dev/null
+++ b/PlotLine/Sql/025_AssetTimelinePerformance.sql
@@ -0,0 +1,170 @@
+SET ANSI_NULLS ON;
+GO
+SET QUOTED_IDENTIFIER ON;
+GO
+
+/*
+    Focused optimisation for dbo.AssetTimeline_GetByProject.
+
+    Diagnosis:
+    - Recent timeline logging showed this procedure at ~12 seconds after it had
+      previously been ~18-40 ms.
+    - The current procedure joins StoryAssets, AssetEvents, Scenes, Chapters,
+      Books, AssetKinds, AssetEventTypes, AssetStates, and LocationPaths.
+    - The first result set expands the recursive LocationPaths view for asset
+      locations; the second result set can be vulnerable to a poor cached plan
+      around the optional @BookID predicate.
+    - This rewrite mirrors the safer CharacterTimeline shape: filter project/book
+      scenes once, filter active project assets once, and materialise project
+      location paths once before joining.
+*/
+
+IF NOT EXISTS (SELECT 1 FROM sys.indexes WHERE name = N'IX_StoryAssets_Project_TimelineList' AND object_id = OBJECT_ID(N'dbo.StoryAssets'))
+BEGIN
+    -- Supports project-scoped asset timeline list filtering and ordering.
+    CREATE INDEX IX_StoryAssets_Project_TimelineList
+    ON dbo.StoryAssets(ProjectID, IsArchived, IsResolved, Importance DESC, AssetName);
+END;
+GO
+
+IF NOT EXISTS (SELECT 1 FROM sys.indexes WHERE name = N'IX_AssetEvents_StoryAssetID_SceneID' AND object_id = OBJECT_ID(N'dbo.AssetEvents'))
+BEGIN
+    -- Supports asset-event reads after project assets have been filtered.
+    CREATE INDEX IX_AssetEvents_StoryAssetID_SceneID
+    ON dbo.AssetEvents(StoryAssetID, SceneID, AssetEventTypeID);
+END;
+GO
+
+IF NOT EXISTS (SELECT 1 FROM sys.indexes WHERE name = N'IX_Locations_Project_Parent_Name' AND object_id = OBJECT_ID(N'dbo.Locations'))
+BEGIN
+    -- Supports project-scoped location path materialisation for asset current locations.
+    CREATE INDEX IX_Locations_Project_Parent_Name
+    ON dbo.Locations(ProjectID, IsArchived, ParentLocationID, LocationName);
+END;
+GO
+
+IF NOT EXISTS (SELECT 1 FROM sys.indexes WHERE name = N'IX_Locations_ParentLocationID' AND object_id = OBJECT_ID(N'dbo.Locations'))
+BEGIN
+    -- Supports recursive location path expansion from parent to child locations.
+    CREATE INDEX IX_Locations_ParentLocationID
+    ON dbo.Locations(ParentLocationID, IsArchived, LocationName);
+END;
+GO
+
+IF EXISTS (SELECT 1 FROM sys.indexes WHERE name = N'IX_StoryAssets_Project_TimelineList' AND object_id = OBJECT_ID(N'dbo.StoryAssets'))
+BEGIN
+    UPDATE STATISTICS dbo.StoryAssets IX_StoryAssets_Project_TimelineList;
+END;
+GO
+
+IF EXISTS (SELECT 1 FROM sys.indexes WHERE name = N'IX_AssetEvents_StoryAssetID_SceneID' AND object_id = OBJECT_ID(N'dbo.AssetEvents'))
+BEGIN
+    UPDATE STATISTICS dbo.AssetEvents IX_AssetEvents_StoryAssetID_SceneID;
+END;
+GO
+
+IF EXISTS (SELECT 1 FROM sys.indexes WHERE name = N'IX_AssetEvents_SceneID' AND object_id = OBJECT_ID(N'dbo.AssetEvents'))
+BEGIN
+    UPDATE STATISTICS dbo.AssetEvents IX_AssetEvents_SceneID;
+END;
+GO
+
+CREATE OR ALTER PROCEDURE dbo.AssetTimeline_GetByProject
+    @ProjectID int,
+    @BookID int = NULL
+AS
+BEGIN
+    SET NOCOUNT ON;
+
+    CREATE TABLE #TimelineScenes
+    (
+        SceneID int NOT NULL PRIMARY KEY,
+        BookSortOrder int NOT NULL,
+        ChapterSortOrder int NOT NULL,
+        SceneSortOrder int NOT NULL
+    );
+
+    INSERT #TimelineScenes (SceneID, BookSortOrder, ChapterSortOrder, SceneSortOrder)
+    SELECT s.SceneID, b.SortOrder, c.SortOrder, s.SortOrder
+    FROM dbo.Books b
+    INNER JOIN dbo.Chapters c ON c.BookID = b.BookID
+    INNER JOIN dbo.Scenes s ON s.ChapterID = c.ChapterID
+    WHERE b.ProjectID = @ProjectID
+        AND b.IsArchived = 0
+        AND c.IsArchived = 0
+        AND s.IsArchived = 0
+        AND (@BookID IS NULL OR b.BookID = @BookID)
+    OPTION (RECOMPILE);
+
+    CREATE TABLE #ProjectAssets
+    (
+        StoryAssetID int NOT NULL PRIMARY KEY,
+        ProjectID int NOT NULL,
+        AssetName nvarchar(200) NOT NULL,
+        AssetKindID int NOT NULL,
+        Description nvarchar(max) NULL,
+        Importance int NOT NULL,
+        CurrentStateID int NULL,
+        CurrentLocationID int NULL,
+        IsResolved bit NOT NULL,
+        CreatedDate datetime2 NOT NULL,
+        UpdatedDate datetime2 NOT NULL,
+        IsArchived bit NOT NULL
+    );
+
+    INSERT #ProjectAssets (StoryAssetID, ProjectID, AssetName, AssetKindID, Description, Importance, CurrentStateID, CurrentLocationID, IsResolved, CreatedDate, UpdatedDate, IsArchived)
+    SELECT StoryAssetID, ProjectID, AssetName, AssetKindID, Description, Importance, CurrentStateID, CurrentLocationID, IsResolved, CreatedDate, UpdatedDate, IsArchived
+    FROM dbo.StoryAssets
+    WHERE ProjectID = @ProjectID
+        AND IsArchived = 0
+    OPTION (RECOMPILE);
+
+    CREATE TABLE #ProjectLocationPaths
+    (
+        LocationID int NOT NULL PRIMARY KEY,
+        LocationName nvarchar(200) NOT NULL,
+        LocationPath nvarchar(max) NOT NULL
+    );
+
+    ;WITH ProjectLocationTree AS
+    (
+        SELECT LocationID, LocationName, CAST(LocationName AS nvarchar(max)) AS LocationPath
+        FROM dbo.Locations
+        WHERE ProjectID = @ProjectID AND ParentLocationID IS NULL AND IsArchived = 0
+
+        UNION ALL
+
+        SELECT child.LocationID, child.LocationName, CAST(parent.LocationPath + N' > ' + child.LocationName AS nvarchar(max)) AS LocationPath
+        FROM dbo.Locations child
+        INNER JOIN ProjectLocationTree parent ON parent.LocationID = child.ParentLocationID
+        WHERE child.ProjectID = @ProjectID AND child.IsArchived = 0
+    )
+    INSERT #ProjectLocationPaths (LocationID, LocationName, LocationPath)
+    SELECT LocationID, LocationName, LocationPath
+    FROM ProjectLocationTree;
+
+    SELECT sa.StoryAssetID, sa.ProjectID, sa.AssetName, sa.AssetKindID, ak.KindName, sa.Description, sa.Importance,
+        sa.CurrentStateID, ast.StateName AS CurrentStateName, sa.CurrentLocationID,
+        location.LocationName AS CurrentLocationName, location.LocationPath AS CurrentLocationPath,
+        sa.IsResolved, sa.CreatedDate, sa.UpdatedDate, sa.IsArchived
+    FROM #ProjectAssets sa
+    INNER JOIN dbo.AssetKinds ak ON ak.AssetKindID = sa.AssetKindID
+    LEFT JOIN dbo.AssetStates ast ON ast.AssetStateID = sa.CurrentStateID
+    LEFT JOIN #ProjectLocationPaths location ON location.LocationID = sa.CurrentLocationID
+    WHERE sa.Importance >= 5 OR sa.IsResolved = 0
+    ORDER BY sa.Importance DESC, sa.AssetName;
+
+    SELECT ae.AssetEventID, ae.StoryAssetID, sa.ProjectID, sa.AssetName, sa.AssetKindID, ak.KindName,
+        ae.SceneID, ae.AssetEventTypeID, aet.TypeName AS AssetEventTypeName, aet.MarkerText,
+        ae.FromStateID, fs.StateName AS FromStateName, ae.ToStateID, ts.StateName AS ToStateName,
+        ae.EventTitle, ae.EventDescription, ae.CreatedDate, ae.UpdatedDate
+    FROM #TimelineScenes scene
+    INNER JOIN dbo.AssetEvents ae ON ae.SceneID = scene.SceneID
+    INNER JOIN #ProjectAssets sa ON sa.StoryAssetID = ae.StoryAssetID
+    INNER JOIN dbo.AssetKinds ak ON ak.AssetKindID = sa.AssetKindID
+    INNER JOIN dbo.AssetEventTypes aet ON aet.AssetEventTypeID = ae.AssetEventTypeID
+    LEFT JOIN dbo.AssetStates fs ON fs.AssetStateID = ae.FromStateID
+    LEFT JOIN dbo.AssetStates ts ON ts.AssetStateID = ae.ToStateID
+    ORDER BY scene.BookSortOrder, scene.ChapterSortOrder, scene.SceneSortOrder, sa.AssetName;
+END;
+GO