diff --git a/CommonHelpers/GlobalConfig.cs b/CommonHelpers/GlobalConfig.cs
index cef3348..960ab61 100644
--- a/CommonHelpers/GlobalConfig.cs
+++ b/CommonHelpers/GlobalConfig.cs
@@ -21,4 +21,23 @@ namespace CommonHelpers
         Detail,
         Full
     }
+
+    public enum OverlayEnabled : uint
+    {
+        Yes = 378313,
+        No
+    }
+
+    [StructLayout(LayoutKind.Sequential)]
+    public struct FanModeSetting
+    {
+        public FanMode Current, Desired;
+    }
+
+    [StructLayout(LayoutKind.Sequential)]
+    public struct OverlayModeSetting
+    {
+        public OverlayMode Current, Desired;
+        public OverlayEnabled CurrentEnabled, DesiredEnabled;
+    }
 }
diff --git a/CommonHelpers/SharedData.cs b/CommonHelpers/SharedData.cs
new file mode 100644
index 0000000..3de8b88
--- /dev/null
+++ b/CommonHelpers/SharedData.cs
@@ -0,0 +1,145 @@
+using System;
+using System.Collections.Generic;
+using System.IO.MemoryMappedFiles;
+using System.Linq;
+using System.Runtime.InteropServices;
+using System.Runtime.Serialization.Formatters.Binary;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace CommonHelpers
+{
+    public class SharedData<T> : IDisposable where T : unmanaged
+    {
+        const int MMF_MAX_SIZE = 256;
+
+        private MemoryMappedFile mmf;
+
+        private SharedData()
+        { }
+
+        public T NewValue()
+        {
+            return default(T);
+        }
+
+        public bool GetValue(out T value)
+        {
+            using (MemoryMappedViewStream mmvStream = mmf.CreateViewStream())
+            {
+                value = default(T);
+
+                if (!mmvStream.CanRead)
+                    return false;
+
+                byte[] buffer = new byte[MMF_MAX_SIZE];
+                mmvStream.Read(buffer, 0, buffer.Length);
+
+                var handle = GCHandle.Alloc(buffer, GCHandleType.Pinned);
+                try
+                {
+                    var output = Marshal.PtrToStructure(handle.AddrOfPinnedObject(), typeof(T));
+                    if (output is null)
+                        return false;
+
+                    value = (T)output;
+                    return true;
+                }
+                catch
+                {
+                    return false;
+                }
+                finally
+                {
+                    handle.Free();
+                }
+            }
+        }
+
+        public bool SetValue(T value)
+        {
+            using (MemoryMappedViewStream mmvStream = mmf.CreateViewStream())
+            {
+                if (!mmvStream.CanWrite)
+                    return false;
+
+                byte[] buffer = new byte[MMF_MAX_SIZE];
+                var handle = GCHandle.Alloc(buffer, GCHandleType.Pinned);
+                try
+                {
+                    Marshal.StructureToPtr(value, handle.AddrOfPinnedObject(), false);
+                }
+                catch
+                {
+                    return false;
+                }
+                finally
+                {
+                    handle.Free();
+                }
+
+                mmvStream.Write(buffer, 0, buffer.Length);
+                return true;
+            }
+        }
+
+        public static bool GetExistingValue(out T value)
+        {
+            try
+            {
+                using (var shared = OpenExisting())
+                {
+                    if (shared.GetValue(out value))
+                        return true;
+                }
+            }
+            catch
+            {
+                value = default(T);
+            }
+            return false;
+        }
+
+        public static bool SetExistingValue(T value)
+        {
+            try
+            {
+                using (var shared = OpenExisting())
+                {
+                    if (shared.SetValue(value))
+                        return true;
+                }
+            }
+            catch
+            {
+            }
+            return false;
+        }
+
+        public void Dispose()
+        {
+            mmf.Dispose();
+        }
+
+        public static String GetUniqueName()
+        {
+            return String.Format("Global_{0}_Setting", typeof(T).Name);
+        }
+
+        public static SharedData<T> CreateNew(String? name = null)
+        {
+            return new SharedData<T>()
+            {
+                mmf = MemoryMappedFile.CreateOrOpen(name ?? GetUniqueName(), MMF_MAX_SIZE)
+            };
+        }
+
+        public static SharedData<T> OpenExisting(String? name = null)
+        {
+            return new SharedData<T>()
+            {
+                mmf = MemoryMappedFile.OpenExisting(name ?? GetUniqueName())
+            };
+        }
+    }
+}
diff --git a/FanControl/FanControlForm.cs b/FanControl/FanControlForm.cs
index afb87b5..cfd789c 100644
--- a/FanControl/FanControlForm.cs
+++ b/FanControl/FanControlForm.cs
@@ -1,4 +1,4 @@
-using CommonHelpers;
+using CommonHelpers;
 using CommonHelpers.FromLibreHardwareMonitor;
 using FanControl.Properties;
 using System;
@@ -24,6 +24,8 @@ namespace FanControl
             "Starts Steam Deck Fan Control on Windows startup."
         );
 
+        private SharedData<FanModeSetting> sharedData = SharedData<FanModeSetting>.CreateNew();
+
         public FanControlForm()
         {
             InitializeComponent();
@@ -122,8 +124,19 @@ namespace FanControl
             fanControl.SetMode(FanMode.Default);
         }
 
+        private void SharedData_Update()
+        {
+            if (sharedData.GetValue(out var value) && Enum.IsDefined<FanMode>(value.Desired))
+            {
+                setFanMode((FanMode)value.Desired);
+            }
+
+            sharedData.SetValue(new FanModeSetting() { Current = fanControl.Mode });
+        }
+
         private void fanLoopTimer_Tick(object sender, EventArgs e)
         {
+            SharedData_Update();
             fanControl.Update();
         }
 
diff --git a/PerformanceOverlay/Controller.cs b/PerformanceOverlay/Controller.cs
index df7d939..f7562d3 100644
--- a/PerformanceOverlay/Controller.cs
+++ b/PerformanceOverlay/Controller.cs
@@ -1,4 +1,4 @@
-using CommonHelpers;
+using CommonHelpers;
 using CommonHelpers.FromLibreHardwareMonitor;
 using Microsoft.VisualBasic.Logging;
 using PerformanceOverlay.External;
@@ -32,6 +32,8 @@ namespace PerformanceOverlay
             "Starts Performance Overlay on Windows startup."
         );
 
+        SharedData<OverlayModeSetting> sharedData = SharedData<OverlayModeSetting>.CreateNew();
+
         public Controller()
         {
             contextMenu = new System.Windows.Forms.ContextMenuStrip(components);
@@ -142,8 +144,37 @@ namespace PerformanceOverlay
             updateContextItems(contextMenu);
         }
 
+        private void SharedData_Update()
+        {
+            if (sharedData.GetValue(out var value))
+            {
+                if (Enum.IsDefined<OverlayMode>(value.Desired))
+                {
+                    Settings.Default.OSDModeParsed = (OverlayMode)value.Desired;
+                    Settings.Default.ShowOSD = true;
+                    Settings.Default.Save();
+                    updateContextItems(contextMenu);
+                }
+
+                if (Enum.IsDefined<OverlayEnabled>(value.DesiredEnabled))
+                {
+                    Settings.Default.ShowOSD = (OverlayEnabled)value.DesiredEnabled == OverlayEnabled.Yes;
+                    Settings.Default.Save();
+                    updateContextItems(contextMenu);
+                }
+            }
+
+            sharedData.SetValue(new OverlayModeSetting()
+            {
+                Current = Settings.Default.OSDModeParsed,
+                CurrentEnabled = Settings.Default.ShowOSD ? OverlayEnabled.Yes : OverlayEnabled.No
+            });
+        }
+
         private void OsdTimer_Tick(object? sender, EventArgs e)
         {
+            SharedData_Update();
+
             try
             {
                 notifyIcon.Text = TitleWithVersion + ". RTSS Version: " + OSD.Version;
diff --git a/PowerControl/MenuStack.cs b/PowerControl/MenuStack.cs
index 7273b4b..83b6fdb 100644
--- a/PowerControl/MenuStack.cs
+++ b/PowerControl/MenuStack.cs
@@ -1,4 +1,5 @@
-using System;
+using CommonHelpers;
+using System;
 using System.Collections.Generic;
 using System.Diagnostics;
 using System.Linq;
@@ -101,6 +102,79 @@ namespace PowerControl
                     Options = { "Auto", 200, 300, 400, 500, 600, 700, 800, 900, 1000, 1100, 1200, 1300, 1400, 1500, 1600 },
                     ApplyDelay = 1000,
                     Visible = false
+                },
+                new Menu.MenuItemSeparator(),
+                new Menu.MenuItemWithOptions()
+                {
+                    Name = "OSD",
+                    ApplyDelay = 500,
+                    OptionsValues = delegate()
+                    {
+                        return Enum.GetValues<OverlayEnabled>().Select(item => (object)item).ToArray();
+                    },
+                    CurrentValue = delegate()
+                    {
+                        if (SharedData<OverlayModeSetting>.GetExistingValue(out var value))
+                           return value.CurrentEnabled;
+                        return null;
+                    },
+                    ApplyValue = delegate(object selected)
+                    {
+                        if (!SharedData<OverlayModeSetting>.GetExistingValue(out var value))
+                            return null;
+                        value.DesiredEnabled =  (OverlayEnabled)selected;
+                        if (!SharedData<OverlayModeSetting>.SetExistingValue(value))
+                            return null;
+                        return selected;
+                    }
+                },
+                new Menu.MenuItemWithOptions()
+                {
+                    Name = "OSD Mode",
+                    ApplyDelay = 500,
+                    OptionsValues = delegate()
+                    {
+                        return Enum.GetValues<OverlayMode>().Select(item => (object)item).ToArray();
+                    },
+                    CurrentValue = delegate()
+                    {
+                        if (SharedData<OverlayModeSetting>.GetExistingValue(out var value))
+                           return value.Current;
+                        return null;
+                    },
+                    ApplyValue = delegate(object selected)
+                    {
+                        if (!SharedData<OverlayModeSetting>.GetExistingValue(out var value))
+                            return null;
+                        value.Desired = (OverlayMode)selected;
+                        if (!SharedData<OverlayModeSetting>.SetExistingValue(value))
+                            return null;
+                        return selected;
+                    }
+                },
+                new Menu.MenuItemWithOptions()
+                {
+                    Name = "FAN",
+                    ApplyDelay = 500,
+                    OptionsValues = delegate()
+                    {
+                        return Enum.GetValues<FanMode>().Select(item => (object)item).ToArray();
+                    },
+                    CurrentValue = delegate()
+                    {
+                        if (SharedData<FanModeSetting>.GetExistingValue(out var value))
+                           return value.Current;
+                        return null;
+                    },
+                    ApplyValue = delegate(object selected)
+                    {
+                        if (!SharedData<FanModeSetting>.GetExistingValue(out var value))
+                            return null;
+                        value.Desired = (FanMode)selected;
+                        if (!SharedData<FanModeSetting>.SetExistingValue(value))
+                            return null;
+                        return selected;
+                    }
                 }
             }
         };