diff --git a/Bin/net40/SunnyUI.dll b/Bin/net40/SunnyUI.dll
index 95bb8435..b6be6340 100644
Binary files a/Bin/net40/SunnyUI.dll and b/Bin/net40/SunnyUI.dll differ
diff --git a/SunnyUI/Controls/UINavMenu.cs b/SunnyUI/Controls/UINavMenu.cs
index 7279bce8..a638a8d8 100644
--- a/SunnyUI/Controls/UINavMenu.cs
+++ b/SunnyUI/Controls/UINavMenu.cs
@@ -80,6 +80,12 @@ namespace Sunny.UI
             SetScrollInfo();
         }
 
+        protected override void Dispose(bool disposing)
+        {
+            base.Dispose(disposing);
+            tmpFont?.Dispose();
+        }
+
         [Browsable(false)]
         public bool IsScaled { get; private set; }
 
@@ -623,8 +629,7 @@ namespace Sunny.UI
 
                 if (ShowTips && MenuHelper.GetTipsText(e.Node).IsValid() && TreeNodeSymbols.NotContainsKey(e.Node))
                 {
-                    var tmpFont = this.DPIScaleFont(TipsFont);
-                    SizeF tipsSize = e.Graphics.MeasureString(MenuHelper.GetTipsText(e.Node), tmpFont);
+                    SizeF tipsSize = e.Graphics.MeasureString(MenuHelper.GetTipsText(e.Node), TempFont);
                     float sfMax = Math.Max(tipsSize.Width, tipsSize.Height) + 1;
                     float tipsLeft = Width - (ScrollBarVisible ? ScrollBarInfo.VerticalScrollBarWidth() : 0) - sfMax - sfMax;
                     float tipsTop = e.Bounds.Y + (ItemHeight - sfMax) / 2;
@@ -635,20 +640,34 @@ namespace Sunny.UI
                         if (MenuHelper[e.Node].TipsCustom)
                         {
                             e.Graphics.FillEllipse(MenuHelper[e.Node].TipsBackColor, tipsLeft, tipsTop, sfMax, sfMax);
-                            e.Graphics.DrawString(MenuHelper.GetTipsText(e.Node), tmpFont, MenuHelper[e.Node].TipsForeColor, new RectangleF(tipsLeft, tipsTop, sfMax, sfMax), alignment);
+                            e.Graphics.DrawString(MenuHelper.GetTipsText(e.Node), TempFont, MenuHelper[e.Node].TipsForeColor, new RectangleF(tipsLeft, tipsTop, sfMax, sfMax), alignment);
                         }
                         else
                         {
                             e.Graphics.FillEllipse(TipsColor, tipsLeft, tipsTop, sfMax, sfMax);
-                            e.Graphics.DrawString(MenuHelper.GetTipsText(e.Node), tmpFont, TipsForeColor, new RectangleF(tipsLeft, tipsTop, sfMax, sfMax), alignment);
+                            e.Graphics.DrawString(MenuHelper.GetTipsText(e.Node), TempFont, TipsForeColor, new RectangleF(tipsLeft, tipsTop, sfMax, sfMax), alignment);
                         }
                     }
-
-                    tmpFont.Dispose();
                 }
             }
         }
 
+        Font tmpFont;
+
+        private Font TempFont
+        {
+            get
+            {
+                if (tmpFont == null || !tmpFont.Size.EqualsFloat(TipsFont.DPIScaleFontSize()))
+                {
+                    tmpFont?.Dispose();
+                    tmpFont = this.DPIScaleFont(TipsFont);
+                }
+
+                return tmpFont;
+            }
+        }
+
         private Color tipsColor = Color.Red;
 
         [DefaultValue(typeof(Color), "Red"), Category("SunnyUI"), Description("节点提示圆点背景颜色")]
diff --git a/SunnyUI/Style/UIDPIScale.cs b/SunnyUI/Style/UIDPIScale.cs
index 448dc0e9..84a274ec 100644
--- a/SunnyUI/Style/UIDPIScale.cs
+++ b/SunnyUI/Style/UIDPIScale.cs
@@ -32,24 +32,6 @@ namespace Sunny.UI
             return control.CreateGraphics().DpiX / 96.0f;
         }
 
-        public static Font DPIScaleFont(this Control control, Font font)
-        {
-            if (UIStyles.DPIScale)
-            {
-                if (font.GdiCharSet == 134)
-                    return new Font(font.FontFamily, font.Size / control.DPIScale(), font.Style, font.Unit, font.GdiCharSet);
-                else
-                    return new Font(font.FontFamily, font.Size / control.DPIScale());
-            }
-            else
-            {
-                if (font.GdiCharSet == 134)
-                    return new Font(font.FontFamily, font.Size, font.Style, font.Unit, font.GdiCharSet);
-                else
-                    return new Font(font.FontFamily, font.Size);
-            }
-        }
-
         public static float DPIScaleFontSize(this Control control, Font font)
         {
             if (UIStyles.DPIScale)
@@ -59,12 +41,22 @@ namespace Sunny.UI
         }
 
         public static float DPIScaleFontSize(this Font font)
+        {
+            return font.Size.DPIScaleFontSize();
+        }
+
+        public static float DPIScaleFontSize(this float fontSize)
         {
             using Control control = new();
             if (UIStyles.DPIScale)
-                return font.Size / control.DPIScale();
+                return fontSize / control.DPIScale();
             else
-                return font.Size;
+                return fontSize;
+        }
+
+        public static Font DPIScaleFont(this Control control, Font font)
+        {
+            return control.DPIScaleFont(font, font.Size);
         }
 
         public static Font DPIScaleFont(this Control control, Font font, float fontSize)