Greatly improve performance of the virtualpad tool, most configurations will have no speed cost unless there is no movie, movie speeds are much improved.

BizHawk.Client.EmuHawk/tools/VirtualPads/VirtualPad.cs

@@ -13,6 +13,11 @@ namespace BizHawk.Client.EmuHawk
 		private readonly PadSchema _schema;
 		private bool _readOnly;
 
+		public void UpdateValues()
+		{
+			PadControls.ForEach(c => c.UpdateValues());
+		}
+
 		private List<IVirtualPadControl> PadControls
 		{
 			get

BizHawk.Client.EmuHawk/tools/VirtualPads/VirtualpadsTool.cs

@@ -195,7 +195,7 @@ namespace BizHawk.Client.EmuHawk
 				Pads.ForEach(pad => pad.Clear());
 			}
 
-			Pads.ForEach(pad => pad.Refresh());
+			Pads.ForEach(pad => pad.UpdateValues());
 		}
 
 		public void FastUpdate()

BizHawk.Client.EmuHawk/tools/VirtualPads/controls/IVirtualPadControl.cs

@@ -9,6 +9,8 @@ namespace BizHawk.Client.EmuHawk
 		/// </summary>
 		void Clear();
 
+		void UpdateValues();
+
 		/// <summary>
 		/// Sets the state of the control based on the given controller state
 		/// </summary>

BizHawk.Client.EmuHawk/tools/VirtualPads/controls/VirtualPadAnalogButton.cs

@@ -36,6 +36,14 @@ namespace BizHawk.Client.EmuHawk
 
 		#region IVirtualPadControl Implementation
 
+		public void UpdateValues()
+		{
+			if (AnalogTrackBar.Value != (int)Global.StickyXORAdapter.GetFloat(Name))
+			{
+				RefreshWidgets();
+			}
+		}
+
 		public void Clear()
 		{
 			Global.StickyXORAdapter.Unset(Name);
@@ -168,7 +176,7 @@ namespace BizHawk.Client.EmuHawk
 			}
 		}
 
-		protected override void OnPaint(PaintEventArgs e)
+		private void RefreshWidgets()
 		{
 			if (!_isSet)
 			{
@@ -177,7 +185,10 @@ namespace BizHawk.Client.EmuHawk
 				ValueLabel.Text = AnalogTrackBar.Value.ToString();
 				_programmaticallyChangingValue = false;
 			}
-
+		}
+		protected override void OnPaint(PaintEventArgs e)
+		{
+			RefreshWidgets();
 			base.OnPaint(e);
 		}
 	}

BizHawk.Client.EmuHawk/tools/VirtualPads/controls/VirtualPadAnalogStick.cs

@@ -46,6 +46,12 @@ namespace BizHawk.Client.EmuHawk
 
 		#region IVirtualPadControl Implementation
 
+		public void UpdateValues()
+		{
+			// Nothing to do
+			// This tool already draws as necessary
+		}
+
 		public void Set(IController controller)
 		{
 			AnalogStick.Set(controller);

BizHawk.Client.EmuHawk/tools/VirtualPads/controls/VirtualPadButton.cs

@@ -36,6 +36,12 @@ namespace BizHawk.Client.EmuHawk
 			}
 		}
 
+		public void UpdateValues()
+		{
+			// Nothing to do
+			// This tool already draws as necessary
+		}
+
 		public void Set(IController controller)
 		{
 			var newVal = controller.IsPressed(Name);

BizHawk.Client.EmuHawk/tools/VirtualPads/controls/VirtualPadTargetScreen.cs

@@ -35,6 +35,11 @@ namespace BizHawk.Client.EmuHawk
 
 		#region IVirtualPadControl Implementation
 
+		public void UpdateValues()
+		{
+			TargetPanel.Refresh();
+		}
+
 		public void Clear()
 		{
 			Global.StickyXORAdapter.Unset(XName);