diff --git a/BizHawk.Client.Common/BinarySaveStates.cs b/BizHawk.Client.Common/BinarySaveStates.cs
index d2fd35e270..d66beaed24 100644
--- a/BizHawk.Client.Common/BinarySaveStates.cs
+++ b/BizHawk.Client.Common/BinarySaveStates.cs
@@ -62,8 +62,6 @@ namespace BizHawk.Client.Common
 		public static BinaryStateLump BranchFrameBuffer { get; private set; }
 		[Name("Branches\\CoreFrameBuffer", "bmp")]
 		public static BinaryStateLump BranchCoreFrameBuffer { get; private set; }
-		[Name("Branches\\LagLog", "bin")]
-		public static BinaryStateLump BranchLagLog { get; private set; }
 		[Name("Branches\\Header", "json")]
 		public static BinaryStateLump BranchHeader { get; private set; }
 		[Name("Branches\\Markers", "txt")]
diff --git a/BizHawk.Client.Common/movie/tasproj/TasBranch.cs b/BizHawk.Client.Common/movie/tasproj/TasBranch.cs
index 9e8d9e31a7..a79a3beec2 100644
--- a/BizHawk.Client.Common/movie/tasproj/TasBranch.cs
+++ b/BizHawk.Client.Common/movie/tasproj/TasBranch.cs
@@ -14,7 +14,6 @@ namespace BizHawk.Client.Common
 		public IStringLog InputLog { get; set; }
 		public BitmapBuffer CoreFrameBuffer { get; set; }
 		public BitmapBuffer OSDFrameBuffer { get; set; }
-		public TasLagLog LagLog { get; set; }
 		public TasMovieChangeLog ChangeLog { get; set; }
 		public DateTime TimeStamp { get; set; }
 		public TasMovieMarkerList Markers { get; set; }
@@ -52,7 +51,6 @@ namespace BizHawk.Client.Common
 			var ninput = new IndexedStateLump(BinaryStateLump.BranchInputLog);
 			var nframebuffer = new IndexedStateLump(BinaryStateLump.BranchFrameBuffer);
 			var ncoreframebuffer = new IndexedStateLump(BinaryStateLump.BranchCoreFrameBuffer);
-			var nlaglog = new IndexedStateLump(BinaryStateLump.BranchLagLog);
 			var nmarkers = new IndexedStateLump(BinaryStateLump.BranchMarkers);
 			var nusertext = new IndexedStateLump(BinaryStateLump.BranchUserText);
 			foreach (var b in this)
@@ -94,11 +92,6 @@ namespace BizHawk.Client.Common
 					QuickBmpFile.Save(vp, s, b.CoreFrameBuffer.Width, b.CoreFrameBuffer.Height);
 				});
 
-				bs.PutLump(nlaglog, delegate(BinaryWriter bw)
-				{
-					b.LagLog.Save(bw);
-				});
-
 				bs.PutLump(nmarkers, delegate(TextWriter tw)
 				{
 					tw.WriteLine(b.Markers.ToString());
@@ -114,7 +107,6 @@ namespace BizHawk.Client.Common
 				ninput.Increment();
 				nframebuffer.Increment();
 				ncoreframebuffer.Increment();
-				nlaglog.Increment();
 				nmarkers.Increment();
 				nusertext.Increment();
 			}
@@ -127,7 +119,6 @@ namespace BizHawk.Client.Common
 			var ninput = new IndexedStateLump(BinaryStateLump.BranchInputLog);
 			var nframebuffer = new IndexedStateLump(BinaryStateLump.BranchFrameBuffer);
 			var ncoreframebuffer = new IndexedStateLump(BinaryStateLump.BranchCoreFrameBuffer);
-			var nlaglog = new IndexedStateLump(BinaryStateLump.BranchLagLog);
 			var nmarkers = new IndexedStateLump(BinaryStateLump.BranchMarkers);
 			var nusertext = new IndexedStateLump(BinaryStateLump.BranchUserText);
 
@@ -197,12 +188,6 @@ namespace BizHawk.Client.Common
 					b.CoreFrameBuffer = new BitmapBuffer(vp.BufferWidth, vp.BufferHeight, vp.VideoBuffer);
 				});
 
-				bl.GetLump(nlaglog, false, delegate(BinaryReader br)
-				{
-					b.LagLog = new TasLagLog();
-					b.LagLog.Load(br);
-				});
-
 				b.Markers = new TasMovieMarkerList(movie);
 				bl.GetLump(nmarkers, false, delegate(TextReader tr)
 				{
@@ -235,7 +220,6 @@ namespace BizHawk.Client.Common
 				ninput.Increment();
 				nframebuffer.Increment();
 				ncoreframebuffer.Increment();
-				nlaglog.Increment();
 				nmarkers.Increment();
 				nusertext.Increment();
 			}
diff --git a/BizHawk.Client.EmuHawk/tools/TAStudio/BookmarksBranchesBox.cs b/BizHawk.Client.EmuHawk/tools/TAStudio/BookmarksBranchesBox.cs
index 15602c210f..ac2116bb94 100644
--- a/BizHawk.Client.EmuHawk/tools/TAStudio/BookmarksBranchesBox.cs
+++ b/BizHawk.Client.EmuHawk/tools/TAStudio/BookmarksBranchesBox.cs
@@ -184,7 +184,6 @@ namespace BizHawk.Client.EmuHawk
 				InputLog = Movie.InputLog.Clone(),
 				CoreFrameBuffer = GlobalWin.MainForm.MakeScreenshotImage(),
 				OSDFrameBuffer = GlobalWin.MainForm.CaptureOSD(),
-				LagLog = Movie.TasLagLog.Clone(),
 				ChangeLog = new TasMovieChangeLog(Movie),
 				TimeStamp = DateTime.Now,
 				Markers = Movie.Markers.DeepClone(),