diff --git a/backends/imgui_impl_metal.h b/backends/imgui_impl_metal.h
index 586b0d371..01cf2f32b 100644
--- a/backends/imgui_impl_metal.h
+++ b/backends/imgui_impl_metal.h
@@ -45,6 +45,10 @@ IMGUI_IMPL_API void ImGui_ImplMetal_UpdateTexture(ImTextureData* tex);
 
 #endif
 
+// (Optional) Multi-viewport: enable vsync (CAMetalLayer.displaySyncEnabled) on secondary viewport windows. Default: disabled.
+// Enable it if your main viewport does not present (e.g. it is hidden) and you rely on vsync for frame pacing. macOS only.
+IMGUI_IMPL_API void ImGui_ImplMetal_SetDisplaySyncEnabled(bool enabled);
+
 //-----------------------------------------------------------------------------
 // C++ API
 //-----------------------------------------------------------------------------
diff --git a/backends/imgui_impl_metal.mm b/backends/imgui_impl_metal.mm
index 881e62178..21d04fc4e 100644
--- a/backends/imgui_impl_metal.mm
+++ b/backends/imgui_impl_metal.mm
@@ -18,6 +18,7 @@
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
 //  2026-XX-XX: Metal: Added support for multiple windows via the ImGuiPlatformIO interface.
+//  2026-11-04: [Docking] Present secondary viewport windows without vsync by default, matching other backends. Added ImGui_ImplMetal_SetDisplaySyncEnabled() to enable it. (#9501)
 //  2026-10-06: Added support for render passes with multiple color attachments: we render to the first one and leave the others untouched. (#9574)
 //  2026-09-07: Round framebuffer dimensions to the nearest integer instead of truncating them. (#9538, 9515, #8628)
 //  2026-08-06: Metal: fixed resizing windows losing framebuffer scale. (#6828, #8856)
@@ -106,6 +107,7 @@ struct ImGui_ImplMetal_Data
 {
     MetalContext*               SharedMetalContext;
     id<MTLRenderCommandEncoder> RenderCommandEncoder;
+    bool                        DisplaySyncEnabled;
 
     ImGui_ImplMetal_Data()      { memset((void*)this, 0, sizeof(*this)); }
 };
@@ -502,6 +504,13 @@ struct ImGuiViewportDataMetal
     bool                        FirstFrame = true;
 };
 
+void ImGui_ImplMetal_SetDisplaySyncEnabled(bool enabled)
+{
+    ImGui_ImplMetal_Data* bd = ImGui_ImplMetal_GetBackendData();
+    IM_ASSERT(bd != nullptr && "Context or backend not initialized! Did you call ImGui_ImplMetal_Init()?");
+    bd->DisplaySyncEnabled = enabled;
+}
+
 static void ImGui_ImplMetal_CreateWindow(ImGuiViewport* viewport)
 {
     ImGui_ImplMetal_Data* bd = ImGui_ImplMetal_GetBackendData();
@@ -562,6 +571,8 @@ static void ImGui_ImplMetal_RenderWindow(ImGuiViewport* viewport, void*)
     ImGuiViewportDataMetal* data = (ImGuiViewportDataMetal*)viewport->RendererUserData;
 
 #if TARGET_OS_OSX
+    ImGui_ImplMetal_Data* bd = ImGui_ImplMetal_GetBackendData();
+    data->MetalLayer.displaySyncEnabled = bd->DisplaySyncEnabled; // Present without vsync by default
     void* handle = viewport->PlatformHandleRaw ? viewport->PlatformHandleRaw : viewport->PlatformHandle;
     NSWindow* window = (__bridge NSWindow*)handle;
 
diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
index b5b7ecbaa..49efa200c 100644
--- a/docs/CHANGELOG.txt
+++ b/docs/CHANGELOG.txt
@@ -114,6 +114,10 @@ Docking+Viewports Branch:
   - Win32: make windows appear with `::SetWindowPos()` w/ `SWP_NOOWNERZORDER` instead
     of unparenting + `ShowWindow()`. Fixes missing taskbar icon for newly appearing
     windows that are parented and use `ImGuiViewportFlags_NoFocusOnAppearing`. (#7354, #8669)
+  - Metal: present secondary viewport windows without vsync by default, matching other
+    backends. Multiple vsynced viewports would serialize their presents and drop the frame
+    rate toward refresh rate / N. Added `ImGui_ImplMetal_SetDisplaySyncEnabled()` to enable
+    it, e.g. for apps that hide the main viewport and rely on vsync for pacing. (#9501)