diff --git a/Assets/Scripts/Debug/ManafallDisableMirrorImgui.cs b/Assets/Scripts/Debug/ManafallDisableMirrorImgui.cs
index ef2c2ddf4..9e4df0a66 100644
--- a/Assets/Scripts/Debug/ManafallDisableMirrorImgui.cs
+++ b/Assets/Scripts/Debug/ManafallDisableMirrorImgui.cs
@@ -4,12 +4,16 @@ using UnityEngine;
 /// <summary>
 /// Disables Mirror IMGUI HUDs that allocate tens of KB every frame via OnGUI.
 /// CLERK: also re-assert after a short delay — NetworkManager can re-enable showGUI on play.
+/// Clears sticky F3/F4 debug overlay prefs once so player/probe builds start without screen clutter.
 /// </summary>
 public static class ManafallDisableMirrorImgui
 {
+    private const string DebugOverlaysHiddenPrefsKey = "Manafall.DebugOverlaysHidden_v1";
+
     [RuntimeInitializeOnLoadMethod(RuntimeInitializeLoadType.AfterSceneLoad)]
     private static void DisableHeavyImgui()
     {
+        ClearStickyDebugOverlayPrefsOnce();
         KillMirrorImgui();
         var go = new GameObject("ClerkMirrorHudKiller");
         Object.DontDestroyOnLoad(go);
@@ -17,6 +21,23 @@ public static class ManafallDisableMirrorImgui
         go.AddComponent<ClerkMirrorHudKiller>();
     }
 
+    /// <summary>
+    /// One-shot for installed players: turn off saved F3/F4 visibility that agents left on.
+    /// Does not run in the Editor (F3 still defaults on there).
+    /// </summary>
+    public static void ClearStickyDebugOverlayPrefsOnce()
+    {
+        if (Application.isEditor)
+            return;
+        if (PlayerPrefs.GetInt(DebugOverlaysHiddenPrefsKey, 0) != 0)
+            return;
+
+        PlayerPrefs.SetInt("Manafall.ViewCostDebug", 0);
+        PlayerPrefs.SetInt("Manafall.MemorySpikeDebug", 0);
+        PlayerPrefs.SetInt(DebugOverlaysHiddenPrefsKey, 1);
+        PlayerPrefs.Save();
+    }
+
     public static void KillMirrorImgui()
     {
         NetworkManagerHUD[] huds = Object.FindObjectsByType<NetworkManagerHUD>(
diff --git a/Assets/Scripts/Rendering/ManafallMemorySpikeDebug.cs b/Assets/Scripts/Rendering/ManafallMemorySpikeDebug.cs
index 562d318e4..b7c398c12 100644
--- a/Assets/Scripts/Rendering/ManafallMemorySpikeDebug.cs
+++ b/Assets/Scripts/Rendering/ManafallMemorySpikeDebug.cs
@@ -332,8 +332,17 @@ public sealed class ManafallMemorySpikeDebug : MonoBehaviour
 
     private void Awake()
     {
-        // Default on in player builds too — this is the hitch board now.
-        visible = PlayerPrefs.GetInt(PrefsKey, 1) != 0;
+        // Default OFF — the hitch board was sticky-on in player/probe builds and filled the screen.
+        // F7 still toggles it. One-shot clear so older installs that saved PrefsKey=1 start clean.
+        const string hideOnceKey = "Manafall.HideWalkHitchOverlay_v1";
+        if (!Application.isEditor && PlayerPrefs.GetInt(hideOnceKey, 0) == 0)
+        {
+            PlayerPrefs.SetInt(PrefsKey, 0);
+            PlayerPrefs.SetInt(hideOnceKey, 1);
+            PlayerPrefs.Save();
+        }
+
+        visible = PlayerPrefs.GetInt(PrefsKey, 0) != 0;
         BuildLabel();
         ApplyVisible();
     }
@@ -356,8 +365,8 @@ public sealed class ManafallMemorySpikeDebug : MonoBehaviour
             PlayerPrefs.SetInt(PrefsKey, visible ? 1 : 0);
             ApplyVisible();
             UnityEngine.Debug.Log(visible
-                ? "[WalkHitch] Overlay on (F4). Walk — top rows are ms on hitch frames."
-                : "[WalkHitch] Overlay off (F4).");
+                ? "[WalkHitch] Overlay on (F7). Walk — top rows are ms on hitch frames."
+                : "[WalkHitch] Overlay off (F7).");
         }
 
         if (!visible || label == null)
@@ -456,7 +465,7 @@ public sealed class ManafallMemorySpikeDebug : MonoBehaviour
         ExpireWindows(Time.unscaledTime);
 
         builder.Length = 0;
-        builder.Append("WALK HITCHES  (F4 hide)\n");
+        builder.Append("WALK HITCHES  (F7 hide)\n");
         builder.AppendFormat(
             "Frame {0:0.0} ms   smooth {1:0.0} ms   FPS {2:0}   hitch≥{3:0} ms\n",
             frameMs,
@@ -541,7 +550,7 @@ public sealed class ManafallMemorySpikeDebug : MonoBehaviour
         int n = FillSortedIndicesByWindowMs();
         if (n == 0)
         {
-            builder.Append("  (no probes yet — keep walking with F4 on)\n");
+            builder.Append("  (no probes yet — keep walking with F7 on)\n");
         }
         else
         {
@@ -926,7 +935,7 @@ public sealed class ManafallMemorySpikeDebug : MonoBehaviour
     private static bool WasTogglePressed()
     {
         Keyboard kb = Keyboard.current;
-        return kb != null && kb.f4Key.wasPressedThisFrame;
+        return kb != null && kb.f7Key.wasPressedThisFrame;
     }
 
     private static string FmtMb(long bytes)
diff --git a/Assets/Scripts/Rendering/ManafallViewCostDebug.cs b/Assets/Scripts/Rendering/ManafallViewCostDebug.cs
index 03597f6c2..35ad25ae8 100644
--- a/Assets/Scripts/Rendering/ManafallViewCostDebug.cs
+++ b/Assets/Scripts/Rendering/ManafallViewCostDebug.cs
@@ -116,6 +116,16 @@ public sealed class ManafallViewCostDebug : MonoBehaviour
 
     private void Awake()
     {
+        // Player/probe builds: clear sticky F3 prefs left on from agent smoke runs.
+        // Editor still defaults on; F3 toggles everywhere.
+        const string hideOnceKey = "Manafall.HideViewCostOverlay_v1";
+        if (!Application.isEditor && PlayerPrefs.GetInt(hideOnceKey, 0) == 0)
+        {
+            PlayerPrefs.SetInt(PrefsKey, 0);
+            PlayerPrefs.SetInt(hideOnceKey, 1);
+            PlayerPrefs.Save();
+        }
+
         visible = PlayerPrefs.GetInt(PrefsKey, Application.isEditor ? 1 : 0) != 0;
         BuildLabel();
         ApplyVisible();