Apparently the debug build has not been freeing memory since 2008. Undo that.

Source/Core/Core/State.cpp

@@ -427,16 +427,6 @@ void LoadAs(const std::string& filename)
 	// Stop the core while we load the state
 	bool wasUnpaused = Core::PauseAndLock(true);
 
-#if defined _DEBUG && defined _WIN32
-	// we use _CRTDBG_DELAY_FREE_MEM_DF (as a speed hack?),
-	// but it was causing us to leak gigantic amounts of memory here,
-	// enough that only a few savestates could be loaded before crashing,
-	// so let's disable it temporarily.
-	int tmpflag = _CrtSetDbgFlag(_CRTDBG_REPORT_FLAG);
-	if (g_loadDepth == 0)
-		_CrtSetDbgFlag(tmpflag & ~_CRTDBG_DELAY_FREE_MEM_DF);
-#endif
-
 	g_loadDepth++;
 
 	// Save temp buffer for undo load state
@@ -494,12 +484,6 @@ void LoadAs(const std::string& filename)
 
 	g_loadDepth--;
 
-#if defined _DEBUG && defined _WIN32
-	// restore _CRTDBG_DELAY_FREE_MEM_DF
-	if (g_loadDepth == 0)
-		_CrtSetDbgFlag(tmpflag);
-#endif
-
 	// resume dat core
 	Core::PauseAndLock(false, wasUnpaused);
 }

Source/Core/DolphinWX/Main.cpp

@@ -232,12 +232,6 @@ bool DolphinApp::OnInit()
 	}
 #endif // wxUSE_CMDLINE_PARSER
 
-#if defined _DEBUG && defined _WIN32
-	int tmpflag = _CrtSetDbgFlag(_CRTDBG_REPORT_FLAG);
-	tmpflag |= _CRTDBG_DELAY_FREE_MEM_DF;
-	_CrtSetDbgFlag(tmpflag);
-#endif
-
 	// Register message box and translation handlers
 	RegisterMsgAlertHandler(&wxMsgAlert);
 	RegisterStringTranslator(&wxStringTranslator);