diff --git a/Robust.Client/Graphics/Clyde/Clyde.Windowing.cs b/Robust.Client/Graphics/Clyde/Clyde.Windowing.cs
index 62cb3cdb4f4..05bfbefefc4 100644
--- a/Robust.Client/Graphics/Clyde/Clyde.Windowing.cs
+++ b/Robust.Client/Graphics/Clyde/Clyde.Windowing.cs
@@ -332,6 +332,7 @@ public IClydeWindow CreateWindow(WindowCreateParameters parameters)
             if (parameters.Owner != null)
                 owner = ((WindowHandle)parameters.Owner).Reg;
 
+            parameters.Main = isMain;
             var (reg, error) = _windowing!.WindowCreate(glSpec, parameters, share, owner);
 
             if (reg != null)
diff --git a/Robust.Client/Graphics/Clyde/GLContext/GLContextWindow.cs b/Robust.Client/Graphics/Clyde/GLContext/GLContextWindow.cs
index 2fe5442fcd6..027798a392e 100644
--- a/Robust.Client/Graphics/Clyde/GLContext/GLContextWindow.cs
+++ b/Robust.Client/Graphics/Clyde/GLContext/GLContextWindow.cs
@@ -219,7 +219,8 @@ private void BlitThreadDoSecondaryWindowBlit(WindowData window)
                 {
                     window.BlitDoneEvent?.Set();
                 }
-                Clyde._windowing!.WindowSwapBuffers(window.Reg);
+                // Single buffered secondary windows, Steam overlay triggers memory leak with secondary double buffers
+                GL.Finish();
                 if (!window.UnlockBeforeSwap)
                 {
                     window.BlitDoneEvent?.Set();
diff --git a/Robust.Client/Graphics/Clyde/Windowing/Sdl3.Window.cs b/Robust.Client/Graphics/Clyde/Windowing/Sdl3.Window.cs
index dd12203219d..060b2d8c309 100644
--- a/Robust.Client/Graphics/Clyde/Windowing/Sdl3.Window.cs
+++ b/Robust.Client/Graphics/Clyde/Windowing/Sdl3.Window.cs
@@ -177,6 +177,11 @@ private void WinThreadWinDestroy(CmdWinDestroy cmd)
                 SDL.SDL_GL_SetAttribute(
                     GLAttr.SDL_GL_FRAMEBUFFER_SRGB_CAPABLE,
                     s.Profile == GLContextProfile.Es ? 0 : 1);
+
+                // Steam overlay causes memory leak with multiple double buffered windows
+                if (!parameters.Main)
+                    SDL.SDL_GL_SetAttribute(GLAttr.SDL_GL_DOUBLEBUFFER, 0);
+
                 int ctxFlags = 0;
 #if DEBUG
                 ctxFlags |= SDL.SDL_GL_CONTEXT_DEBUG_FLAG;
diff --git a/Robust.Client/Graphics/WindowCreateParameters.cs b/Robust.Client/Graphics/WindowCreateParameters.cs
index 171d4ef83b5..727f7ee9db6 100644
--- a/Robust.Client/Graphics/WindowCreateParameters.cs
+++ b/Robust.Client/Graphics/WindowCreateParameters.cs
@@ -11,6 +11,7 @@ public sealed class WindowCreateParameters
         public bool Visible = true;
         public IClydeMonitor? Monitor;
         public bool Fullscreen;
+        public bool Main;
 
         /// <summary>
         /// The window that will "own" this window.