diff --git a/Source/UI/Window/UIWindow.cpp b/Source/UI/Window/UIWindow.cpp
index 080c6aea0..532b19933 100644
--- a/Source/UI/Window/UIWindow.cpp
+++ b/Source/UI/Window/UIWindow.cpp
@@ -838,18 +838,6 @@ void UIWindow::ClearChildren(bool destroy) {
   }
 }
 
-// OFFSET: 0x00AA5E90
-// FUNCTION: fn_17226
-void UIWindowMgr::DeferDeletion(UIWindow* window) {
-  if (!window) {
-    return;
-  }
-
-  this->ForgetWindowReferences(window);
-  this->deferredDeletion.insert(window);
-  window->Show(0);
-}
-
 // OFFSET: 0x00A82E50
 // FUNCTION: fn_16997
 void UIWindow::RemoveChild(UIWindow* child, unsigned char destroy) {
diff --git a/Source/UI/Window/WindowAncestry.cpp b/Source/UI/Window/WindowAncestry.cpp
index ae3ec80cf..403e470b9 100644
--- a/Source/UI/Window/WindowAncestry.cpp
+++ b/Source/UI/Window/WindowAncestry.cpp
@@ -5,7 +5,7 @@
 
 // OFFSET: 0x00A81C90
 // FUNCTION: fn_16985
-bool UIWindow::IsDescendantOf(const UIWindow* ancestor) const {
+__declspec(noinline) bool UIWindow::IsDescendantOf(const UIWindow* ancestor) const {
   for (const UIWindow* node = this->parent; node; node = node->parent) {
     if (node == ancestor) {
       return true;
@@ -17,7 +17,7 @@ bool UIWindow::IsDescendantOf(const UIWindow* ancestor) const {
 
 // OFFSET: 0x00A8C200
 // FUNCTION: fn_17130
-void UIWindowMgr::ForgetWindowReferences(UIWindow* removed) {
+__forceinline void UIWindowMgr::ForgetWindowReferences(UIWindow* removed) {
   if (this->inputWindow && (this->inputWindow == removed || this->inputWindow->IsDescendantOf(removed))) {
     this->inputWindow = nullptr;
   }
@@ -39,6 +39,18 @@ void UIWindowMgr::ForgetWindowReferences(UIWindow* removed) {
   }
 }
 
+// OFFSET: 0x00AA5E90
+// FUNCTION: fn_17226
+void UIWindowMgr::DeferDeletion(UIWindow* window) {
+  if (!window) {
+    return;
+  }
+
+  this->ForgetWindowReferences(window);
+  this->deferredDeletion.insert(window);
+  window->Show(0);
+}
+
 // OFFSET: 0x00AA8F30
 // FUNCTION: fn_17250
 void UIWindowMgr::ClearWindow01B8() {