diff --git a/OpenRa.Game/Clock.cs b/OpenRa.Game/Clock.cs
index 10ea5ce435..806ae14b2b 100644
--- a/OpenRa.Game/Clock.cs
+++ b/OpenRa.Game/Clock.cs
@@ -1,109 +1,75 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Runtime.InteropServices;
+
 namespace OpenRa.Game
 {
-	/// <summary>
-	/// Provides access to the current time, frame time, and frame rate.
-	/// </summary>
 	public static class Clock
 	{
-		/// <summary>
-		/// Performs one-time initialization for the clock service
-		/// </summary>
+		[DllImport("kernel32.dll")]
+		static extern bool QueryPerformanceCounter(out long value);
+		[DllImport("kernel32.dll")]
+		static extern bool QueryPerformanceFrequency(out long frequency);
+
+		static int frameCount = 0;
+		static long frequency;
+		static long lastTime;
+		static double frameTime = 0;
+		static double totalTime = 0;
+		const int FramerateUpdateFrequency = 10;
+		static int lastFrameRate = 0;
+		static int lastFrameCount = 0;
+		static double nextFrameRateUpdateTime = 0;
+
 		static Clock()
 		{
-			startTime = System.Environment.TickCount;
-			StartFrame();
+			QueryPerformanceFrequency(out frequency);
+			QueryPerformanceCounter(out lastTime);
 		}
 
 		public static void Reset()
 		{
-			frameCount = 0;
-			lastFrameCount = 0;
-			lastFrameRate = 0;
-			startTime = System.Environment.TickCount;
-			StartFrame();
+			totalTime = 0;
 		}
 
-		#region StartFrame
-
-		/// <summary>
-		/// Indicates to the clock that a new frame has begun. This should be called exactly once per frame.
-		/// </summary>
-		public static void StartFrame() 
+		public static void StartFrame()
 		{
-			int ticks = System.Environment.TickCount - startTime;
-			frameStartTime = ticks / 1000.0;
+			long time;
+			QueryPerformanceCounter(out time);
+
+			frameTime = (double)(time - lastTime) / (double)frequency;
+			totalTime += frameTime;
+
+			lastTime = time;
 
 			frameCount++;
 
-			if( Time > nextFrameRateUpdateTime )
+			if (totalTime > nextFrameRateUpdateTime)
 			{
-				// set next update time
 				nextFrameRateUpdateTime += (1.0 / FramerateUpdateFrequency);
-				// average between last and current frame, to make spikes less severe
-				const int OldFramerateWeight = 10;
+				const int OldFramerateWeight = 20;
 				const int NewFramerateWeight = 1;
 				int newFrameRate = (frameCount - lastFrameCount) * FramerateUpdateFrequency;
-				lastFrameRate = (lastFrameRate * OldFramerateWeight + NewFramerateWeight * newFrameRate) / (OldFramerateWeight + NewFramerateWeight );
+				lastFrameRate = (lastFrameRate * OldFramerateWeight + NewFramerateWeight * newFrameRate) 
+					/ (OldFramerateWeight + NewFramerateWeight);
 				lastFrameCount = frameCount;
 			}
 		}
 
-		#endregion
-
-		#region Private Implementation Details
-
-		// number of framerate updates per second
-		private const int FramerateUpdateFrequency = 10;
-		
-		// the time at which the application started
-		private static int startTime;
-		// the time at which this frame began
-		private static double frameStartTime;
-		// total number of frames rendered
-		private static int frameCount = 0;
-		// next time to update fps count
-		private static double nextFrameRateUpdateTime = 0;
-		// frame count at most recent fps calculation
-		private static int lastFrameCount = 0;
-		// most recently calculated fps
-		private static int lastFrameRate = 0;
-
-		#endregion
-
-		#region Properties
-
-		/// <summary>
-		/// The time the current frame started
-		/// </summary>
-		public static double Time 
+		public static double Time
 		{
-			get { return frameStartTime; }
+			get { return totalTime; }
 		}
 
-		/// <summary>
-		/// The number of frames rendered since the engine started
-		/// </summary>
-		public static int FrameCount
-		{
-			get { return frameCount; }
-		}
-
-		/// <summary>
-		/// The most recent frame-rate
-		/// </summary>
 		public static int FrameRate
 		{
 			get { return lastFrameRate; }
 		}
 
-		/// <summary>
-		/// The frame time corresponding to the most recent frame-rate
-		/// </summary>
 		public static double FrameTime
 		{
-			get { return 1.0 / lastFrameRate; }
+			get { return frameTime; }
 		}
-
-		#endregion
 	}
 }
diff --git a/OpenRa.Game/MainWindow.cs b/OpenRa.Game/MainWindow.cs
index 0822b4f850..695c5440c0 100644
--- a/OpenRa.Game/MainWindow.cs
+++ b/OpenRa.Game/MainWindow.cs
@@ -73,7 +73,7 @@ namespace OpenRa.Game
 			float u0 = (float)s.origin.X / (float)s.sheet.bitmap.Width;
 			float u1 = (float)(s.origin.X + s.size.Width) / (float)s.sheet.bitmap.Width;
 
-			return (1 - u) * u0 + u * u1;
+			return (u > 0) ? u1 : u0;// (1 - u) * u0 + u * u1;
 		}
 
 		float V(SheetRectangle<Sheet> s, float v)
@@ -81,13 +81,13 @@ namespace OpenRa.Game
 			float v0 = (float)s.origin.Y / (float)s.sheet.bitmap.Height;
 			float v1 = (float)(s.origin.Y + s.size.Height) / (float)s.sheet.bitmap.Height;
 
-			return (1 - v) * v0 + v * v1;
+			return (v > 0) ? v1 : v0;// return (1 - v) * v0 + v * v1;
 		}
 
 		void LoadVertexBuffer()
 		{
 			Dictionary<Sheet, List<ushort>> indexMap = new Dictionary<Sheet, List<ushort>>();
-			Vertex[] vertices = new Vertex[4 * 128 * 128];//map.Width * map.Height];
+			Vertex[] vertices = new Vertex[4 * 128 * 128];
 
 			for( int i = map.XOffset; i < map.XOffset+ map.Width; i++ )
 				for (int j = map.YOffset; j < map.YOffset + map.Height; j++)
@@ -131,7 +131,9 @@ namespace OpenRa.Game
 
 			Visible = true;
 
-			device = GraphicsDevice.Create(this, ClientSize.Width, ClientSize.Height, true, false);
+			//device = GraphicsDevice.Create(this, ClientSize.Width, ClientSize.Height, true, false);
+
+			device = GraphicsDevice.Create(this, 1280, 800, false, false);
 
 			IniFile mapFile = new IniFile(File.OpenRead("../../../" + mapName));
 			map = new Map(mapFile);
@@ -189,6 +191,22 @@ namespace OpenRa.Game
 			}
 		}
 
+		static T First<T>(IEnumerable<T> src)
+		{
+			IEnumerator<T> enumerator = src.GetEnumerator();
+			return enumerator.MoveNext() ? enumerator.Current : default(T);
+		}
+
+		static T Nth<T>(IEnumerable<T> src, int n)
+		{
+			IEnumerator<T> enumerator = src.GetEnumerator();
+			bool ok = false;
+			while (n-- > 0)
+				ok = enumerator.MoveNext();
+
+			return ok ? enumerator.Current : default(T);
+		}
+
 		void Frame()
 		{
 			Clock.StartFrame();
@@ -225,6 +243,14 @@ namespace OpenRa.Game
 			device.Present();
 		}
 
+		protected override void OnKeyDown(KeyEventArgs e)
+		{
+			base.OnKeyDown(e);
+
+			if (e.KeyCode == Keys.C)
+				Clock.Reset();
+		}
+
 		TileSet LoadTileSet(Map currentMap)
 		{
 			switch (currentMap.Theater.ToLowerInvariant())