diff --git a/BizHawk.Client.Common/RomLoader.cs b/BizHawk.Client.Common/RomLoader.cs
index 8724851a77..89c66d855e 100644
--- a/BizHawk.Client.Common/RomLoader.cs
+++ b/BizHawk.Client.Common/RomLoader.cs
@@ -294,7 +294,7 @@ namespace BizHawk.Client.Common
 								break;
 							case "SAT":
 								{
-									var saturn = new Yabause(nextComm, disc, Global.Config.SaturnUseGL);
+									var saturn = new Yabause(nextComm, disc, GetCoreSyncSettings<Yabause>());
 									nextEmulator = saturn;
 								}
 								break;
diff --git a/BizHawk.Client.Common/config/Config.cs b/BizHawk.Client.Common/config/Config.cs
index 7295c48553..6f5bdab3b3 100644
--- a/BizHawk.Client.Common/config/Config.cs
+++ b/BizHawk.Client.Common/config/Config.cs
@@ -409,13 +409,6 @@ namespace BizHawk.Client.Common
 		public bool SNES_ShowOBJ3 = true;
 		public bool SNES_ShowOBJ4 = true;
 
-		// SATURN GRAPHICS SETTINGS
-		public bool SaturnUseGL = false;
-		public int SaturnDispFactor = 1;
-		public bool SaturnDispFree = false;
-		public int SaturnGLW = 640;
-		public int SaturnGLH = 480;
-
 		// PCE BG Viewer settings
 		public bool PCEBGViewerSaveWIndowPosition = true;
 		public bool PCEBGViewerAutoload = false;
@@ -423,14 +416,6 @@ namespace BizHawk.Client.Common
 		public int PCEBGViewerWndy = -1;
 		public int PCEBGViewerRefreshRate = 16;
 
-		// Coleco Settings
-		//public bool ColecoSkipBiosIntro = false;
-
-		//GB Debugger settings
-		public bool AutoloadGBDebugger = false;
-		public bool GBDebuggerSaveWindowPosition = true;
-		public bool GameBoySkipBIOS = true;
-
 		#region Cheats Dialog
 
 		public bool Cheats_ValuesAsHex = true;
diff --git a/BizHawk.Client.EmuHawk/MainForm.Events.cs b/BizHawk.Client.EmuHawk/MainForm.Events.cs
index 7fae791f99..e8d7ceaaaa 100644
--- a/BizHawk.Client.EmuHawk/MainForm.Events.cs
+++ b/BizHawk.Client.EmuHawk/MainForm.Events.cs
@@ -1637,11 +1637,7 @@ namespace BizHawk.Client.EmuHawk
 		{
 			using (var dlg = new SaturnPrefs())
 			{
-				var result = dlg.ShowDialog(this);
-				if (result == DialogResult.OK)
-				{
-					SaturnSetPrefs();
-				}
+				dlg.ShowDialog(this);
 			}
 		}
 
diff --git a/BizHawk.Client.EmuHawk/MainForm.cs b/BizHawk.Client.EmuHawk/MainForm.cs
index eb09e5b6c6..33cfc1b712 100644
--- a/BizHawk.Client.EmuHawk/MainForm.cs
+++ b/BizHawk.Client.EmuHawk/MainForm.cs
@@ -1376,32 +1376,7 @@ namespace BizHawk.Client.EmuHawk
 			}
 		}
 
-		private void SaturnSetPrefs(Yabause e = null)
-		{
-			if (e == null)
-			{
-				e = Global.Emulator as Yabause;
-			}
 
-			if (Global.Config.SaturnUseGL != e.GLMode)
-			{
-				// theoretically possible; not coded. meh.
-				FlagNeedsReboot();
-				return;
-			}
-
-			if (e.GLMode && Global.Config.SaturnUseGL)
-			{
-				if (Global.Config.SaturnDispFree)
-				{
-					e.SetGLRes(0, Global.Config.SaturnGLW, Global.Config.SaturnGLH);
-				}
-				else
-				{
-					e.SetGLRes(Global.Config.SaturnDispFactor, 0, 0);
-				}
-			}
-		}
 
 		private void HandlePlatformMenus()
 		{
@@ -2891,11 +2866,7 @@ namespace BizHawk.Client.EmuHawk
 
 			if (result)
 			{
-				if (loader.LoadedEmulator is Yabause)
-				{
-					SaturnSetPrefs(loader.LoadedEmulator as Yabause);
-				}
-				else if (loader.LoadedEmulator is TI83)
+				if (loader.LoadedEmulator is TI83)
 				{
 					if (Global.Config.TI83autoloadKeyPad)
 					{
diff --git a/BizHawk.Client.EmuHawk/config/Saturn/SaturnPrefs.cs b/BizHawk.Client.EmuHawk/config/Saturn/SaturnPrefs.cs
index c12d2fa27d..b67780fbe0 100644
--- a/BizHawk.Client.EmuHawk/config/Saturn/SaturnPrefs.cs
+++ b/BizHawk.Client.EmuHawk/config/Saturn/SaturnPrefs.cs
@@ -8,6 +8,7 @@ using System.Text;
 using System.Windows.Forms;
 
 using BizHawk.Client.Common;
+using BizHawk.Emulation.Cores.Sega.Saturn;
 
 namespace BizHawk.Client.EmuHawk
 {
@@ -18,13 +19,15 @@ namespace BizHawk.Client.EmuHawk
 			InitializeComponent();
 			try
 			{
-				radioButtonGL.Checked = Global.Config.SaturnUseGL;
-				radioButtonSoft.Checked = !Global.Config.SaturnUseGL;
-				radioButtonFree.Checked = Global.Config.SaturnDispFree;
-				radioButtonFactor.Checked = !Global.Config.SaturnDispFree;
-				numericUpDownFactor.Value = Global.Config.SaturnDispFactor;
-				numericUpDown1.Value = Global.Config.SaturnGLW;
-				numericUpDown2.Value = Global.Config.SaturnGLH;
+				var ss = (Yabause.SaturnSyncSettings)Global.Emulator.GetSyncSettings();
+
+				radioButtonGL.Checked = ss.UseGL;
+				radioButtonSoft.Checked = !ss.UseGL;
+				radioButtonFree.Checked = ss.DispFree;
+				radioButtonFactor.Checked = !ss.DispFree;
+				numericUpDownFactor.Value = ss.DispFactor;
+				numericUpDown1.Value = ss.GLW;
+				numericUpDown2.Value = ss.GLH;
 			}
 			catch (ArgumentOutOfRangeException)
 			{
@@ -44,11 +47,13 @@ namespace BizHawk.Client.EmuHawk
 
 		private void buttonOK_Click(object sender, EventArgs e)
 		{
-			Global.Config.SaturnUseGL = radioButtonGL.Checked;
-			Global.Config.SaturnDispFree = radioButtonFree.Checked;
-			Global.Config.SaturnDispFactor = (int)numericUpDownFactor.Value;
-			Global.Config.SaturnGLW = (int)numericUpDown1.Value;
-			Global.Config.SaturnGLH = (int)numericUpDown2.Value;
+			var ss = (Yabause.SaturnSyncSettings)Global.Emulator.GetSyncSettings();
+			ss.UseGL = radioButtonGL.Checked;
+			ss.DispFree = radioButtonFree.Checked;
+			ss.DispFactor = (int)numericUpDownFactor.Value;
+			ss.GLW = (int)numericUpDown1.Value;
+			ss.GLH = (int)numericUpDown2.Value;
+			GlobalWin.MainForm.PutCoreSyncSettings(ss);
 		}
 	}
 }
diff --git a/BizHawk.Emulation.Cores/Consoles/Sega/Saturn/Yabause.cs b/BizHawk.Emulation.Cores/Consoles/Sega/Saturn/Yabause.cs
index 9010e3608c..b1be151dce 100644
--- a/BizHawk.Emulation.Cores/Consoles/Sega/Saturn/Yabause.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Sega/Saturn/Yabause.cs
@@ -41,21 +41,26 @@ namespace BizHawk.Emulation.Cores.Sega.Saturn
 
 		LibYabause.InputCallback InputCallbackH;
 
-		public Yabause(CoreComm CoreComm, DiscSystem.Disc CD, bool GL)
+		public Yabause(CoreComm CoreComm, DiscSystem.Disc CD, object SyncSettings)
 		{
 			byte[] bios = CoreComm.CoreFileProvider.GetFirmware("SAT", "J", true, "Saturn BIOS is required.");
 			CoreComm.RomStatusDetails = string.Format("Disk partial hash:{0}", CD.GetHash());
 			this.CoreComm = CoreComm;
 			this.CD = CD;
+
+			this.SyncSettings = (SaturnSyncSettings)SyncSettings ?? new SaturnSyncSettings();
+
 			ResetCounters();
-			Init(bios, GL);
+			Init(bios);
 
 			InputCallbackH = new LibYabause.InputCallback(() => CoreComm.InputCallback.Call());
 			LibYabause.libyabause_setinputcallback(InputCallbackH);
 		}
 
-		void Init(byte[] bios, bool GL = false)
+		void Init(byte[] bios)
 		{
+			bool GL = SyncSettings.UseGL;
+
 			if (AttachedCore != null)
 			{
 				AttachedCore.Dispose();
@@ -92,6 +97,8 @@ namespace BizHawk.Emulation.Cores.Sega.Saturn
 			InitMemoryDomains();
 
 			GLMode = GL;
+			// if in GL mode, this will trigger the initial GL resize
+			PutSyncSettings(this.SyncSettings);
 		}
 
 		public ControllerDefinition ControllerDefinition
@@ -632,9 +639,42 @@ namespace BizHawk.Emulation.Cores.Sega.Saturn
 
 		#endregion
 
+		SaturnSyncSettings SyncSettings;
+
 		public object GetSettings() { return null; }
-		public object GetSyncSettings() { return null; }
+		public object GetSyncSettings() { return SyncSettings.Clone(); }
 		public bool PutSettings(object o) { return false; }
-		public bool PutSyncSettings(object o) { return false; }
+		public bool PutSyncSettings(object o)
+		{
+			var n = (SaturnSyncSettings)o;
+			bool ret = SaturnSyncSettings.NeedsReboot(SyncSettings, n);
+
+			SyncSettings = n;
+
+			if (GLMode && SyncSettings.UseGL)
+				if (SyncSettings.DispFree)
+					SetGLRes(0, SyncSettings.GLW, SyncSettings.GLH);
+				else
+					SetGLRes(SyncSettings.DispFactor, 0, 0);
+			return ret;
+		}
+
+		public class SaturnSyncSettings
+		{
+			public bool UseGL = false;
+			public int DispFactor = 1;
+			public bool DispFree = false;
+			public int GLW = 640;
+			public int GLH = 480;
+
+			public static bool NeedsReboot(SaturnSyncSettings x, SaturnSyncSettings y)
+			{
+				return x.UseGL != y.UseGL;
+			}
+			public SaturnSyncSettings Clone()
+			{
+				return (SaturnSyncSettings)MemberwiseClone();
+			}
+		}
 	}
 }