diff --git a/OngekiFumenEditor/Kernel/Graphics/Performence/DefaultDebugPerfomenceMonitor.cs b/OngekiFumenEditor/Kernel/Graphics/Performence/DefaultDebugPerfomenceMonitor.cs
index abfbbdcb..22b85aa7 100644
--- a/OngekiFumenEditor/Kernel/Graphics/Performence/DefaultDebugPerfomenceMonitor.cs
+++ b/OngekiFumenEditor/Kernel/Graphics/Performence/DefaultDebugPerfomenceMonitor.cs
@@ -17,7 +17,7 @@ namespace OngekiFumenEditor.Kernel.Graphics.Performence
 	[PartCreationPolicy(CreationPolicy.NonShared)]
 	public class DefaultDebugPerfomenceMonitor : IPerfomenceMonitor
 	{
-		const int RECORD_LENGTH = 10;
+		const int RECORD_LENGTH = 165;
 
 		private class DrawingPerformenceData
 		{
@@ -130,7 +130,7 @@ private IDrawingPerformenceStatisticsData StatisticsPerformenceData(IEnumerable<
 				return default;
 
 			var ave = dataList.Select(x => x.DrawingSpendTicks.Average()).Average();
-			var most = dataList.SelectMany(x => x.DrawingSpendTicks).GroupBy(x => (int)x).OrderByDescending(x => x.Key).SelectMany(x => x).Average();
+			var most = dataList.SelectMany(x => x.DrawingSpendTicks).GroupBy(x => (int)x).OrderByDescending(x => x.Count()).SelectMany(x => x).Average();
 
 			var list = dataList
 				.Select(x => new { TotalCost = x.DrawingSpendTicks.Sum(), Obj = x })
@@ -162,8 +162,8 @@ public IRenderPerformenceStatisticsData GetRenderPerformenceData()
 			{
 				AveSpendTicks = RenderSpendTicks.Average(),
 				AveUIRenderSpendTicks = UIRenderSpendTicks.Average(),
-				MostUIRenderSpendTicks = UIRenderSpendTicks.GroupBy(x => x).OrderByDescending(x => x.Key).FirstOrDefault().Key,
-				MostSpendTicks = RenderSpendTicks.GroupBy(x => x).OrderByDescending(x => x.Key).FirstOrDefault().Key,
+				MostUIRenderSpendTicks = UIRenderSpendTicks.GroupBy(x => x).OrderByDescending(x => x.Count()).FirstOrDefault().Key,
+				MostSpendTicks = RenderSpendTicks.GroupBy(x => x).OrderByDescending(x => x.Count()).FirstOrDefault().Key,
 				AveDrawCall = (int)TotalDrawCall.Average()
 			};
 		}
diff --git a/OngekiFumenEditor/Kernel/Graphics/Performence/DefaultReleasePerfomenceMonitor.cs b/OngekiFumenEditor/Kernel/Graphics/Performence/DefaultReleasePerfomenceMonitor.cs
index 4cbb6821..365eb8b2 100644
--- a/OngekiFumenEditor/Kernel/Graphics/Performence/DefaultReleasePerfomenceMonitor.cs
+++ b/OngekiFumenEditor/Kernel/Graphics/Performence/DefaultReleasePerfomenceMonitor.cs
@@ -50,8 +50,8 @@ public IRenderPerformenceStatisticsData GetRenderPerformenceData()
 			{
 				AveSpendTicks = RenderSpendTicks.Average(),
 				AveUIRenderSpendTicks = UIRenderSpendTicks.Average(),
-				MostUIRenderSpendTicks = UIRenderSpendTicks.GroupBy(x => x).OrderByDescending(x => x.Key).FirstOrDefault().Key,
-				MostSpendTicks = RenderSpendTicks.GroupBy(x => x).OrderByDescending(x => x.Key).FirstOrDefault().Key,
+				MostUIRenderSpendTicks = UIRenderSpendTicks.GroupBy(x => x).OrderByDescending(x => x.Count()).FirstOrDefault().Key,
+				MostSpendTicks = RenderSpendTicks.GroupBy(x => x).OrderByDescending(x => x.Count()).FirstOrDefault().Key,
 				AveDrawCall = (int)TotalDrawCall.Average()
 			};
 		}
diff --git a/OngekiFumenEditor/Modules/FumenVisualEditor/ViewModels/FumenVisualEditorViewModel.Drawing.cs b/OngekiFumenEditor/Modules/FumenVisualEditor/ViewModels/FumenVisualEditorViewModel.Drawing.cs
index a0818d83..5e1f8381 100644
--- a/OngekiFumenEditor/Modules/FumenVisualEditor/ViewModels/FumenVisualEditorViewModel.Drawing.cs
+++ b/OngekiFumenEditor/Modules/FumenVisualEditor/ViewModels/FumenVisualEditorViewModel.Drawing.cs
@@ -23,6 +23,7 @@
 using OngekiFumenEditor.Properties;
 using OngekiFumenEditor.UI.Controls;
 using OngekiFumenEditor.Utils;
+using OngekiFumenEditor.Utils.ObjectPool;
 using OpenTK.Graphics.OpenGL;
 using OpenTK.Mathematics;
 using OpenTK.Wpf;
@@ -247,20 +248,30 @@ private void OnEditorRender(TimeSpan ts)
         //todo 可以把GroupBy()给优化掉
         var renderObjects =
             GetDisplayableObjects(fumen, visibleTGridRanges)
-                .Distinct()
+                //.Distinct()
                 .OfType<OngekiTimelineObjectBase>()
                 .GroupBy(x => x.IDShortName);
 
+        var containList = ObjectPool<List<List<OngekiTimelineObjectBase>>>.Get();
+        containList.Clear();
+
         foreach (var objGroup in renderObjects)
         {
             if (GetDrawingTarget(objGroup.Key) is not IFumenEditorDrawingTarget[] drawingTargets)
                 continue;
 
+            var contain = ObjectPool<List<OngekiTimelineObjectBase>>.Get();
+            contain.Clear();
+
+            contain.AddRange(objGroup);
+            //contain.SortBy(x => x.TGrid);
+
             foreach (var drawingTarget in drawingTargets)
                 if (!drawMap.TryGetValue(drawingTarget, out var enums))
-                    drawMap[drawingTarget] = objGroup;
+                    drawMap[drawingTarget] = contain;
                 else
-                    drawMap[drawingTarget] = enums.Concat(objGroup);
+                    drawMap[drawingTarget] = enums.Concat(contain);
+            containList.Add(contain);
         }
 
         if (IsPreviewMode)
@@ -289,14 +300,13 @@ private void OnEditorRender(TimeSpan ts)
             if (drawMap.TryGetValue(drawingTarget, out var drawingObjs))
             {
                 drawingTarget.Begin(this);
-                foreach (var obj in drawingObjs.OrderBy(x => x.TGrid))
+                //all object collection has been sorted within GetDisplayableObjects()
+                foreach (var obj in drawingObjs/*.OrderBy(x => x.TGrid)*/)
                     drawingTarget.Post(obj);
                 drawingTarget.End();
             }
         }
 
-        drawMap.Clear();
-
         timeSignatureHelper.DrawTimeSigntureText(this);
         xGridHelper.DrawXGridText(this, CachedMagneticXGridLines);
         judgeLineHelper.Draw(this);
@@ -304,6 +314,12 @@ private void OnEditorRender(TimeSpan ts)
         selectingRangeHelper.Draw(this);
 
 
+        //clean up
+        drawMap.Clear();
+        foreach (var contains in containList)
+            ObjectPool<List<OngekiTimelineObjectBase>>.Return(contains);
+        ObjectPool<List<List<OngekiTimelineObjectBase>>>.Return(containList);
+
         PerfomenceMonitor.OnAfterRender();
     }