diff --git a/BizHawk.Emulation.Common/Sound/SN76489.cs b/BizHawk.Emulation.Common/Sound/SN76489.cs
index 81aad04fb7..2c8ef985fe 100644
--- a/BizHawk.Emulation.Common/Sound/SN76489.cs
+++ b/BizHawk.Emulation.Common/Sound/SN76489.cs
@@ -216,12 +216,12 @@ namespace BizHawk.Emulation.Common.Components
 			ser.Sync("PsgLatch", ref PsgLatch);
 			ser.Sync("Panning", ref stereoPanning);
 			ser.EndSection();
-		}
 
-		public void PostLoadState()
-		{
-			StereoPanning = stereoPanning;
-			UpdateNoiseType(Channels[3].NoiseType);
+			if (ser.IsReader)
+			{
+				StereoPanning = stereoPanning;
+				UpdateNoiseType(Channels[3].NoiseType);
+			}
 		}
 
 		public int MaxVolume { get; set; }
diff --git a/BizHawk.Emulation.Common/Sound/YM2413.cs b/BizHawk.Emulation.Common/Sound/YM2413.cs
index c1e44970e8..ceffd67fef 100644
--- a/BizHawk.Emulation.Common/Sound/YM2413.cs
+++ b/BizHawk.Emulation.Common/Sound/YM2413.cs
@@ -42,12 +42,10 @@ namespace BizHawk.Emulation.Common.Components
 			ser.Sync("RegisterLatch", ref RegisterLatch);
 			ser.Sync("Registers", ref opll.reg, false);
 			ser.EndSection();
-		}
 
-		public void PostLoadState()
-		{
-			for (byte i = 0; i < opll.reg.Length; i++)
-				Write(i, opll.reg[i]);
+			if (ser.IsReader)
+				for (byte i = 0; i < opll.reg.Length; i++)
+					Write(i, opll.reg[i]);
 		}
 
 		public void Reset()
diff --git a/BizHawk.Emulation.Cores/Consoles/Coleco/ColecoVision.cs b/BizHawk.Emulation.Cores/Consoles/Coleco/ColecoVision.cs
index b66fb4a0ab..4ae3ed0072 100644
--- a/BizHawk.Emulation.Cores/Consoles/Coleco/ColecoVision.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Coleco/ColecoVision.cs
@@ -170,9 +170,9 @@ namespace BizHawk.Emulation.Cores.ColecoVision
 
 		public bool BinarySaveStatesPreferred { get { return false; } }
 		public void SaveStateBinary(BinaryWriter bw) { SyncState(Serializer.CreateBinaryWriter(bw)); }
-		public void LoadStateBinary(BinaryReader br) { SyncState(Serializer.CreateBinaryReader(br)); PostLoadState(); }
+		public void LoadStateBinary(BinaryReader br) { SyncState(Serializer.CreateBinaryReader(br)); }
 		public void SaveStateText(TextWriter tw) { SyncState(Serializer.CreateTextWriter(tw)); }
-		public void LoadStateText(TextReader tr) { SyncState(Serializer.CreateTextReader(tr)); PostLoadState(); }
+		public void LoadStateText(TextReader tr) { SyncState(Serializer.CreateTextReader(tr)); }
 
 		void SyncState(Serializer ser)
 		{
@@ -187,12 +187,6 @@ namespace BizHawk.Emulation.Cores.ColecoVision
 			ser.EndSection();
 		}
 
-		void PostLoadState()
-		{
-			VDP.PostLoadState();
-			PSG.PostLoadState();
-		}
-
 		byte[] stateBuffer;
 		public byte[] SaveStateBinary()
 		{
diff --git a/BizHawk.Emulation.Cores/Consoles/Coleco/TMS9918A.cs b/BizHawk.Emulation.Cores/Consoles/Coleco/TMS9918A.cs
index 2cf0626062..70533e2306 100644
--- a/BizHawk.Emulation.Cores/Consoles/Coleco/TMS9918A.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Coleco/TMS9918A.cs
@@ -481,12 +481,10 @@ namespace BizHawk.Emulation.Cores.ColecoVision
 			ser.Sync("Registers", ref Registers, false);
 			ser.Sync("VRAM", ref VRAM, false);
 			ser.EndSection();
-		}
 
-		public void PostLoadState()
-		{
-			for (int i = 0; i < Registers.Length; i++)
-				WriteRegister(i, Registers[i]);
+			if (ser.IsReader)
+				for (int i = 0; i < Registers.Length; i++)
+					WriteRegister(i, Registers[i]);
 		}
 	}
 }
\ No newline at end of file
diff --git a/BizHawk.Emulation.Cores/Consoles/Sega/SMS/SMS.cs b/BizHawk.Emulation.Cores/Consoles/Sega/SMS/SMS.cs
index d5c6b869bc..003cb61cc7 100644
--- a/BizHawk.Emulation.Cores/Consoles/Sega/SMS/SMS.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Sega/SMS/SMS.cs
@@ -332,9 +332,9 @@ namespace BizHawk.Emulation.Cores.Sega.MasterSystem
 
 		public bool BinarySaveStatesPreferred { get { return false; } }
 		public void SaveStateBinary(BinaryWriter bw) { SyncState(Serializer.CreateBinaryWriter(bw)); }
-		public void LoadStateBinary(BinaryReader br) { SyncState(Serializer.CreateBinaryReader(br)); PostLoadState(); }
+		public void LoadStateBinary(BinaryReader br) { SyncState(Serializer.CreateBinaryReader(br)); }
 		public void SaveStateText(TextWriter tw) { SyncState(Serializer.CreateTextWriter(tw)); }
-		public void LoadStateText(TextReader tr) { SyncState(Serializer.CreateTextReader(tr)); PostLoadState(); }
+		public void LoadStateText(TextReader tr) { SyncState(Serializer.CreateTextReader(tr)); }
 		
 		void SyncState(Serializer ser)
 		{
@@ -369,14 +369,6 @@ namespace BizHawk.Emulation.Cores.Sega.MasterSystem
 			ser.EndSection();
 		}
 
-		void PostLoadState()
-		{
-			Vdp.PostLoadState();
-			PSG.PostLoadState();
-			if (HasYM2413)
-				YM2413.PostLoadState();
-		}
-
 		byte[] stateBuffer;
 		public byte[] SaveStateBinary()
 		{
diff --git a/BizHawk.Emulation.Cores/Consoles/Sega/SMS/VDP.cs b/BizHawk.Emulation.Cores/Consoles/Sega/SMS/VDP.cs
index 031d7a1a8d..2348635c69 100644
--- a/BizHawk.Emulation.Cores/Consoles/Sega/SMS/VDP.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Sega/SMS/VDP.cs
@@ -416,17 +416,15 @@ namespace BizHawk.Emulation.Cores.Sega.MasterSystem
 			ser.Sync("CRAM", ref CRAM, false);
 			ser.Sync("VRAM", ref VRAM, false);
 			ser.EndSection();
-		}
 
-		public void PostLoadState()
-		{
-			for (int i = 0; i < Registers.Length; i++)
-				WriteRegister(i, Registers[i]);
-
-			for (ushort i = 0; i < VRAM.Length; i++)
-				UpdatePatternBuffer(i, VRAM[i]);
-
-			UpdatePrecomputedPalette();
+			if (ser.IsReader)
+			{
+				for (int i = 0; i < Registers.Length; i++)
+					WriteRegister(i, Registers[i]);
+				for (ushort i = 0; i < VRAM.Length; i++)
+					UpdatePatternBuffer(i, VRAM[i]);
+				UpdatePrecomputedPalette();
+			}
 		}
 
 		public int[] GetVideoBuffer()