diff --git a/TrueCraft.API/TrueCraft.API.csproj b/TrueCraft.API/TrueCraft.API.csproj
index 8588179..85a1f40 100644
--- a/TrueCraft.API/TrueCraft.API.csproj
+++ b/TrueCraft.API/TrueCraft.API.csproj
@@ -20,6 +20,8 @@
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>false</ConsolePause>
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
     <DebugType>none</DebugType>
@@ -28,6 +30,16 @@
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>false</ConsolePause>
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Optimized Debug|AnyCPU' ">
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Optimized Debug</OutputPath>
+    <WarningLevel>4</WarningLevel>
+    <DefineConstants>DEBUG;</DefineConstants>
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+    <DebugSymbols>true</DebugSymbols>
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />
diff --git a/TrueCraft.Client/TrueCraft.Client.csproj b/TrueCraft.Client/TrueCraft.Client.csproj
index aab8588..e41111a 100644
--- a/TrueCraft.Client/TrueCraft.Client.csproj
+++ b/TrueCraft.Client/TrueCraft.Client.csproj
@@ -10,7 +10,6 @@
     <OutputType>WinExe</OutputType>
     <RootNamespace>TrueCraft.Client</RootNamespace>
     <AssemblyName>TrueCraft.Client</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
     <NoWin32Manifest>False</NoWin32Manifest>
     <SignAssembly>False</SignAssembly>
     <DelaySign>False</DelaySign>
@@ -22,6 +21,7 @@
     <DebugType>Full</DebugType>
     <IntermediateOutputPath>obj\$(Configuration)\</IntermediateOutputPath>
     <WarningLevel>4</WarningLevel>
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)' == 'Debug' ">
     <DefineConstants>$(DefineConstants);WINDOWS</DefineConstants>
@@ -47,6 +47,26 @@
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <Commandlineparameters>localhost TestUser</Commandlineparameters>
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <DebugType>
+    </DebugType>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|x86' ">
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|x86' ">
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Optimized Debug|AnyCPU' ">
+    <DebugType>
+    </DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Optimized Debug</OutputPath>
+    <DefineConstants>DEBUG;</DefineConstants>
+    <DebugSymbols>true</DebugSymbols>
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="Ionic.Zip.Reduced">
diff --git a/TrueCraft.Core.Test/TrueCraft.Core.Test.csproj b/TrueCraft.Core.Test/TrueCraft.Core.Test.csproj
index 6b4c459..6847fc7 100644
--- a/TrueCraft.Core.Test/TrueCraft.Core.Test.csproj
+++ b/TrueCraft.Core.Test/TrueCraft.Core.Test.csproj
@@ -20,6 +20,7 @@
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>false</ConsolePause>
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
     <DebugType>full</DebugType>
@@ -28,6 +29,12 @@
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>false</ConsolePause>
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Optimized Debug|AnyCPU' ">
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Optimized Debug</OutputPath>
+    <WarningLevel>4</WarningLevel>
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />
diff --git a/TrueCraft.Core/Lighting/WorldLighting.cs b/TrueCraft.Core/Lighting/WorldLighting.cs
index 627c461..fa246ac 100644
--- a/TrueCraft.Core/Lighting/WorldLighting.cs
+++ b/TrueCraft.Core/Lighting/WorldLighting.cs
@@ -5,6 +5,7 @@ using TrueCraft.API.Logic;
 using TrueCraft.API;
 using System.Collections.Generic;
 using System.Diagnostics;
+using TrueCraft.Profiling;
 
 namespace TrueCraft.Core.Lighting
 {
@@ -113,12 +114,14 @@ namespace TrueCraft.Core.Lighting
             var chunk = World.FindChunk((Coordinates3D)op.Box.Center, generate: false);
             if (chunk == null || !chunk.TerrainPopulated)
                 return;
+            Profiler.Start("lighting.box");
             for (int x = (int)op.Box.Min.X; x < (int)op.Box.Max.X; x++)
             for (int z = (int)op.Box.Min.Z; z < (int)op.Box.Max.Z; z++)
             for (int y = (int)op.Box.Max.Y - 1; y >= (int)op.Box.Min.Y; y--)
             {
                 LightVoxel(x, y, z, op);
             }
+            Profiler.Done();
         }
 
         /// <summary>
@@ -161,6 +164,8 @@ namespace TrueCraft.Core.Lighting
             if (chunk == null || !chunk.TerrainPopulated) // Move on if this chunk is empty
                 return;
 
+            Profiler.Start("lighting.voxel");
+
             var id = World.GetBlockID(coords);
             var provider = BlockRepository.GetBlockProvider(id);
 
@@ -235,6 +240,7 @@ namespace TrueCraft.Core.Lighting
                 if (z + 1 >= op.Box.Max.Z)
                     PropegateLightEvent(x, y, z + 1, propegated, op);
             }
+            Profiler.Done();
         }
 
         public bool TryLightNext()
diff --git a/TrueCraft.Core/Logic/Blocks/GrassBlock.cs b/TrueCraft.Core/Logic/Blocks/GrassBlock.cs
index fe0b194..42db617 100644
--- a/TrueCraft.Core/Logic/Blocks/GrassBlock.cs
+++ b/TrueCraft.Core/Logic/Blocks/GrassBlock.cs
@@ -104,9 +104,10 @@ namespace TrueCraft.Core.Logic.Blocks
                     var _block = world.GetBlockLight(candidate + Coordinates3D.Up);
                     if (_sky < 4 && _block < 4)
                         continue;
-                    IChunk chunk = world.FindChunk(candidate);
+                    IChunk chunk;
+                    var _candidate = world.FindBlockPosition(candidate, out chunk);
                     bool grow = true;
-                    for (int y = candidate.Y; y < chunk.GetHeight((byte)candidate.X, (byte)candidate.Z); y++)
+                    for (int y = candidate.Y; y < chunk.GetHeight((byte)_candidate.X, (byte)_candidate.Z); y++)
                     {
                         var b = world.GetBlockID(new Coordinates3D(candidate.X, y, candidate.Z));
                         var p = world.BlockRepository.GetBlockProvider(b);
@@ -116,10 +117,13 @@ namespace TrueCraft.Core.Logic.Blocks
                             break;
                         }
                     }
-                    world.SetBlockID(candidate, GrassBlock.BlockID);
-                    server.Scheduler.ScheduleEvent("grass", chunk,
-                        TimeSpan.FromSeconds(MathHelper.Random.Next(MinGrowthTime, MaxGrowthTime)),
-                        s => TrySpread(candidate, world, server));
+                    if (grow)
+                    {
+                        world.SetBlockID(candidate, GrassBlock.BlockID);
+                        server.Scheduler.ScheduleEvent("grass", chunk,
+                            TimeSpan.FromSeconds(MathHelper.Random.Next(MinGrowthTime, MaxGrowthTime)),
+                            s => TrySpread(candidate, world, server));
+                    }
                     break;
                 }
             }
diff --git a/TrueCraft.Core/TrueCraft.Core.csproj b/TrueCraft.Core/TrueCraft.Core.csproj
index 92ee33f..83ef5d1 100644
--- a/TrueCraft.Core/TrueCraft.Core.csproj
+++ b/TrueCraft.Core/TrueCraft.Core.csproj
@@ -30,6 +30,13 @@
     <WarningLevel>4</WarningLevel>
     <ConsolePause>false</ConsolePause>
   </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Optimized Debug|AnyCPU' ">
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Optimized Debug</OutputPath>
+    <WarningLevel>4</WarningLevel>
+    <DefineConstants>DEBUG;</DefineConstants>
+    <DebugSymbols>true</DebugSymbols>
+  </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />
     <Reference Include="Ionic.Zip.Reduced">
@@ -358,6 +365,10 @@
       <Project>{4488498D-976D-4DA3-BF72-109531AF0488}</Project>
       <Name>fNbt</Name>
     </ProjectReference>
+    <ProjectReference Include="..\TrueCraft.Profiling\TrueCraft.Profiling.csproj">
+      <Project>{BCA0E139-CF47-43B3-9DC9-D4611C0A2AAD}</Project>
+      <Name>TrueCraft.Profiling</Name>
+    </ProjectReference>
   </ItemGroup>
   <ProjectExtensions>
     <MonoDevelop>
diff --git a/TrueCraft.Launcher/Singleplayer/SingleplayerServer.cs b/TrueCraft.Launcher/Singleplayer/SingleplayerServer.cs
index aeb16fd..9cbb6e7 100644
--- a/TrueCraft.Launcher/Singleplayer/SingleplayerServer.cs
+++ b/TrueCraft.Launcher/Singleplayer/SingleplayerServer.cs
@@ -5,6 +5,7 @@ using TrueCraft.API.Logging;
 using TrueCraft.API;
 using System.Net;
 using TrueCraft.Core.Logging;
+using TrueCraft;
 
 namespace TrueCraft.Launcher.Singleplayer
 {
diff --git a/TrueCraft.Launcher/TrueCraft.Launcher.csproj b/TrueCraft.Launcher/TrueCraft.Launcher.csproj
index fe94b94..64d758c 100644
--- a/TrueCraft.Launcher/TrueCraft.Launcher.csproj
+++ b/TrueCraft.Launcher/TrueCraft.Launcher.csproj
@@ -20,6 +20,8 @@
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>false</ConsolePause>
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
     <DebugType>none</DebugType>
@@ -28,6 +30,8 @@
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>false</ConsolePause>
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />
@@ -115,4 +119,12 @@ copy $(SolutionDir)packages\MonoGame.Framework.Linux.3.4.0.459\lib\net40\MonoGam
 copy $(SolutionDir)packages\MonoGame.Framework.WindowsGL.3.4.0.459\lib\net40\MonoGame.Framework.dll $(TargetDir)MonoGame.Framework.Windows.dll
 copy $(SolutionDir)packages\MonoGame.Framework.MacOS.3.4.0.459\lib\net40\MonoGame.Framework.dll $(TargetDir)MonoGame.Framework.MacOS.dll </PostBuildEvent>
   </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Optimized Debug|AnyCPU' ">
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Optimized Debug</OutputPath>
+    <WarningLevel>4</WarningLevel>
+    <DefineConstants>DEBUG;</DefineConstants>
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+    <DebugSymbols>true</DebugSymbols>
+  </PropertyGroup>
 </Project>
diff --git a/TrueCraft.Profiling/Profiler.cs b/TrueCraft.Profiling/Profiler.cs
index bc1bbec..2616b3f 100644
--- a/TrueCraft.Profiling/Profiler.cs
+++ b/TrueCraft.Profiling/Profiler.cs
@@ -12,6 +12,7 @@ namespace TrueCraft.Profiling
             Stopwatch = new Stopwatch();
             EnabledBuckets = new List<string>();
             ActiveTimers = new Stack<ActiveTimer>();
+            LogLag = false;
             Stopwatch.Start();
         }
 
@@ -19,6 +20,8 @@ namespace TrueCraft.Profiling
         private static List<string> EnabledBuckets { get; set; }
         private static Stack<ActiveTimer> ActiveTimers { get; set; }
 
+        public static bool LogLag { get; set; }
+
         private struct ActiveTimer
         {
             public long Started, Finished;
@@ -49,21 +52,23 @@ namespace TrueCraft.Profiling
         }
 
         [Conditional("DEBUG")]
-        public static void Done()
+        public static void Done(long lag = -1)
         {
             if (ActiveTimers.Count > 0)
             {
                 var timer = ActiveTimers.Pop();
                 timer.Finished = Stopwatch.ElapsedTicks;
+                double elapsed = (timer.Finished - timer.Started) / 10000.0;
                 for (int i = 0; i < EnabledBuckets.Count; i++)
                 {
                     if (Match(EnabledBuckets[i], timer.Bucket))
                     {
-                        Console.WriteLine("{0} took {1}ms", timer.Bucket,
-                            (timer.Finished - timer.Started) / 10000.0);
+                        Console.WriteLine("{0} took {1}ms", timer.Bucket, elapsed);
                         break;
                     }
                 }
+                if (LogLag && lag != -1 && elapsed > lag)
+                    Console.WriteLine("{0} is lagging by {1}ms", timer.Bucket, elapsed);
             }
         }
 
diff --git a/TrueCraft.Profiling/TrueCraft.Profiling.csproj b/TrueCraft.Profiling/TrueCraft.Profiling.csproj
index 88436ea..15d4329 100644
--- a/TrueCraft.Profiling/TrueCraft.Profiling.csproj
+++ b/TrueCraft.Profiling/TrueCraft.Profiling.csproj
@@ -20,6 +20,7 @@
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>false</ConsolePause>
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
     <Optimize>true</Optimize>
@@ -27,6 +28,15 @@
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>false</ConsolePause>
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Optimized Debug|AnyCPU' ">
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Optimized Debug</OutputPath>
+    <WarningLevel>4</WarningLevel>
+    <DefineConstants>DEBUG;</DefineConstants>
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+    <DebugSymbols>true</DebugSymbols>
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />
diff --git a/TrueCraft.sln b/TrueCraft.sln
index 6fb1a8e..231ceac 100644
--- a/TrueCraft.sln
+++ b/TrueCraft.sln
@@ -23,38 +23,55 @@ Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
 		Release|Any CPU = Release|Any CPU
+		Optimized Debug|Any CPU = Optimized Debug|Any CPU
 	EndGlobalSection
 	GlobalSection(ProjectConfigurationPlatforms) = postSolution
 		{4488498D-976D-4DA3-BF72-109531AF0488}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{4488498D-976D-4DA3-BF72-109531AF0488}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{4488498D-976D-4DA3-BF72-109531AF0488}.Optimized Debug|Any CPU.ActiveCfg = Optimized Debug|Any CPU
+		{4488498D-976D-4DA3-BF72-109531AF0488}.Optimized Debug|Any CPU.Build.0 = Optimized Debug|Any CPU
 		{4488498D-976D-4DA3-BF72-109531AF0488}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{4488498D-976D-4DA3-BF72-109531AF0488}.Release|Any CPU.Build.0 = Release|Any CPU
 		{6604F17A-552E-405D-B327-37C8B1648C86}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{6604F17A-552E-405D-B327-37C8B1648C86}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{6604F17A-552E-405D-B327-37C8B1648C86}.Optimized Debug|Any CPU.ActiveCfg = Optimized Debug|Any CPU
+		{6604F17A-552E-405D-B327-37C8B1648C86}.Optimized Debug|Any CPU.Build.0 = Optimized Debug|Any CPU
 		{6604F17A-552E-405D-B327-37C8B1648C86}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{6604F17A-552E-405D-B327-37C8B1648C86}.Release|Any CPU.Build.0 = Release|Any CPU
 		{A6516869-A2FB-4E31-85C8-2285490CB32C}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{A6516869-A2FB-4E31-85C8-2285490CB32C}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{A6516869-A2FB-4E31-85C8-2285490CB32C}.Optimized Debug|Any CPU.ActiveCfg = Optimized Debug|Any CPU
+		{A6516869-A2FB-4E31-85C8-2285490CB32C}.Optimized Debug|Any CPU.Build.0 = Optimized Debug|Any CPU
 		{A6516869-A2FB-4E31-85C8-2285490CB32C}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{A6516869-A2FB-4E31-85C8-2285490CB32C}.Release|Any CPU.Build.0 = Release|Any CPU
 		{BCA0E139-CF47-43B3-9DC9-D4611C0A2AAD}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{BCA0E139-CF47-43B3-9DC9-D4611C0A2AAD}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{BCA0E139-CF47-43B3-9DC9-D4611C0A2AAD}.Optimized Debug|Any CPU.ActiveCfg = Optimized Debug|Any CPU
+		{BCA0E139-CF47-43B3-9DC9-D4611C0A2AAD}.Optimized Debug|Any CPU.Build.0 = Optimized Debug|Any CPU
 		{BCA0E139-CF47-43B3-9DC9-D4611C0A2AAD}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{BCA0E139-CF47-43B3-9DC9-D4611C0A2AAD}.Release|Any CPU.Build.0 = Release|Any CPU
 		{BCFDCD93-C23E-49E6-9767-A887B3C2A709}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{BCFDCD93-C23E-49E6-9767-A887B3C2A709}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{BCFDCD93-C23E-49E6-9767-A887B3C2A709}.Optimized Debug|Any CPU.ActiveCfg = Optimized Debug|Any CPU
+		{BCFDCD93-C23E-49E6-9767-A887B3C2A709}.Optimized Debug|Any CPU.Build.0 = Optimized Debug|Any CPU
 		{BCFDCD93-C23E-49E6-9767-A887B3C2A709}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{BCFDCD93-C23E-49E6-9767-A887B3C2A709}.Release|Any CPU.Build.0 = Release|Any CPU
 		{C1C47EF5-2D8A-4231-AAA8-F651F52F480E}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{C1C47EF5-2D8A-4231-AAA8-F651F52F480E}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{C1C47EF5-2D8A-4231-AAA8-F651F52F480E}.Optimized Debug|Any CPU.ActiveCfg = Optimized Debug|Any CPU
+		{C1C47EF5-2D8A-4231-AAA8-F651F52F480E}.Optimized Debug|Any CPU.Build.0 = Optimized Debug|Any CPU
 		{C1C47EF5-2D8A-4231-AAA8-F651F52F480E}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{C1C47EF5-2D8A-4231-AAA8-F651F52F480E}.Release|Any CPU.Build.0 = Release|Any CPU
 		{FA4BE9A3-DBF0-4380-BA2B-FFAA71C4706D}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{FA4BE9A3-DBF0-4380-BA2B-FFAA71C4706D}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{FA4BE9A3-DBF0-4380-BA2B-FFAA71C4706D}.Optimized Debug|Any CPU.ActiveCfg = Optimized Debug|Any CPU
+		{FA4BE9A3-DBF0-4380-BA2B-FFAA71C4706D}.Optimized Debug|Any CPU.Build.0 = Optimized Debug|Any CPU
 		{FA4BE9A3-DBF0-4380-BA2B-FFAA71C4706D}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{FA4BE9A3-DBF0-4380-BA2B-FFAA71C4706D}.Release|Any CPU.Build.0 = Release|Any CPU
 		{FEE55B54-91B0-4325-A2C3-D576C0B7A81F}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{FEE55B54-91B0-4325-A2C3-D576C0B7A81F}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{FEE55B54-91B0-4325-A2C3-D576C0B7A81F}.Optimized Debug|Any CPU.ActiveCfg = Optimized Debug|Any CPU
+		{FEE55B54-91B0-4325-A2C3-D576C0B7A81F}.Optimized Debug|Any CPU.Build.0 = Optimized Debug|Any CPU
 		{FEE55B54-91B0-4325-A2C3-D576C0B7A81F}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{FEE55B54-91B0-4325-A2C3-D576C0B7A81F}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
diff --git a/TrueCraft/EventScheduler.cs b/TrueCraft/EventScheduler.cs
index 4b92366..5833b1f 100644
--- a/TrueCraft/EventScheduler.cs
+++ b/TrueCraft/EventScheduler.cs
@@ -86,9 +86,11 @@ namespace TrueCraft
                     }
                     if (e.When > start)
                         break; // List is sorted, we can exit early
+                    if (start > Stopwatch.ElapsedTicks + 200000)
+                        break; // We're falling behind
                 }
             }
-            Profiler.Done();
+            Profiler.Done(20);
         }
 
         private struct ScheduledEvent
diff --git a/TrueCraft/MultiplayerServer.cs b/TrueCraft/MultiplayerServer.cs
index 4af7dce..7159d06 100644
--- a/TrueCraft/MultiplayerServer.cs
+++ b/TrueCraft/MultiplayerServer.cs
@@ -221,16 +221,18 @@ namespace TrueCraft
         {
             int _x = chunk.Coordinates.X * Chunk.Width;
             int _z = chunk.Coordinates.Z * Chunk.Depth;
+            Coordinates3D coords, _coords;
             for (byte x = 0; x < Chunk.Width; x++)
             {
                 for (byte z = 0; z < Chunk.Depth; z++)
                 {
                     for (int y = 0; y < chunk.GetHeight(x, z); y++)
                     {
-                        var coords = new Coordinates3D(_x + x, y, _z + z);
-                        var id = world.GetBlockID(coords);
+                        _coords.X = x; _coords.Y = y; _coords.Z = z;
+                        var id = chunk.GetBlockID(_coords);
                         if (id == 0)
                             continue;
+                        coords.X = _x + x; coords.Y = y; coords.Z = _z + z;
                         var provider = BlockRepository.GetBlockProvider(id);
                         provider.BlockLoadedFromChunk(coords, this, world);
                     }
@@ -398,7 +400,7 @@ namespace TrueCraft
                 ScheduleUpdatesForChunk(t.Item1, t.Item2);
             Profiler.Done();
 
-            Profiler.Done();
+            Profiler.Done(MillisecondsPerTick);
 
             EnvironmentWorker.Change(MillisecondsPerTick, 0);
         }
diff --git a/TrueCraft/ServerConfiguration.cs b/TrueCraft/ServerConfiguration.cs
index d2160e8..3df8b54 100644
--- a/TrueCraft/ServerConfiguration.cs
+++ b/TrueCraft/ServerConfiguration.cs
@@ -16,6 +16,9 @@ namespace TrueCraft
 
                 [YamlMember(Alias = "buckets")]
                 public string Buckets { get; set; }
+
+                [YamlMember(Alias = "lag")]
+                public bool Lag { get; set; }
             }
 
             public DebugConfiguration()
diff --git a/TrueCraft/TrueCraft.csproj b/TrueCraft/TrueCraft.csproj
index 6199a9b..a242e00 100644
--- a/TrueCraft/TrueCraft.csproj
+++ b/TrueCraft/TrueCraft.csproj
@@ -18,11 +18,23 @@
     <DebugSymbols>true</DebugSymbols>
     <ConsolePause>false</ConsolePause>
     <DefineConstants>DEBUG;</DefineConstants>
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
     <Optimize>true</Optimize>
     <OutputPath>bin\Release</OutputPath>
     <WarningLevel>4</WarningLevel>
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+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Optimized Debug|AnyCPU' ">
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Optimized Debug</OutputPath>
+    <WarningLevel>4</WarningLevel>
+    <DefineConstants>DEBUG;</DefineConstants>
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+    <DebugSymbols>true</DebugSymbols>
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />