diff --git a/src/utils.c b/src/utils.c
index 8477297..5aeadd0 100644
--- a/src/utils.c
+++ b/src/utils.c
@@ -488,7 +488,7 @@ BOOL CALLBACK util_enum_child_proc(HWND hwnd, LPARAM lparam)
                     0,
                     0,
                     0,
-                    SWP_FRAMECHANGED | SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER | SWP_NOOWNERZORDER
+                    SWP_ASYNCWINDOWPOS | SWP_FRAMECHANGED | SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER | SWP_NOOWNERZORDER
                 );
             }
         }
diff --git a/src/wndproc.c b/src/wndproc.c
index 96cf44e..961f33d 100644
--- a/src/wndproc.c
+++ b/src/wndproc.c
@@ -854,9 +854,7 @@ LRESULT CALLBACK fake_WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam
             RedrawWindow(hWnd, NULL, NULL, RDW_INVALIDATE | RDW_ALLCHILDREN);
         }
 
-        EnterCriticalSection(&g_ddraw->cs);
         ReleaseSemaphore(g_ddraw->render.sem, 1, NULL);
-        LeaveCriticalSection(&g_ddraw->cs);
         break;
     }
     case WM_ERASEBKGND: