diff --git a/rpcs3/Emu/Cell/Modules/cellKb.cpp b/rpcs3/Emu/Cell/Modules/cellKb.cpp
index f6ae9433d2..131cff6613 100644
--- a/rpcs3/Emu/Cell/Modules/cellKb.cpp
+++ b/rpcs3/Emu/Cell/Modules/cellKb.cpp
@@ -46,7 +46,7 @@ KeyboardHandlerBase::KeyboardHandlerBase(utils::serial* ar)
 
 	if (m_info.max_connect)
 	{
-		Emu.DeferDeserialization([this]()
+		Emu.PostponeInitCode([this]()
 		{
 			Init(m_info.max_connect);
 			auto lk = init.init();
diff --git a/rpcs3/Emu/Cell/Modules/cellMouse.cpp b/rpcs3/Emu/Cell/Modules/cellMouse.cpp
index f7ae70bfb4..4f664eeb3e 100644
--- a/rpcs3/Emu/Cell/Modules/cellMouse.cpp
+++ b/rpcs3/Emu/Cell/Modules/cellMouse.cpp
@@ -46,7 +46,7 @@ MouseHandlerBase::MouseHandlerBase(utils::serial* ar)
 
 	if (m_info.max_connect)
 	{
-		Emu.DeferDeserialization([this]()
+		Emu.PostponeInitCode([this]()
 		{
 			Init(m_info.max_connect);
 			auto lk = init.init();
diff --git a/rpcs3/Emu/Cell/lv2/sys_cond.cpp b/rpcs3/Emu/Cell/lv2/sys_cond.cpp
index 7f284f20de..ba36ad5d14 100644
--- a/rpcs3/Emu/Cell/lv2/sys_cond.cpp
+++ b/rpcs3/Emu/Cell/lv2/sys_cond.cpp
@@ -45,7 +45,7 @@ CellError lv2_cond::on_id_create()
 
 	ensure(!!Emu.DeserialManager());
 
-	Emu.DeferDeserialization([this]()
+	Emu.PostponeInitCode([this]()
 	{
 		if (!mutex)
 		{
diff --git a/rpcs3/Emu/Cell/lv2/sys_event.cpp b/rpcs3/Emu/Cell/lv2/sys_event.cpp
index 56bfee417d..26d9ffd590 100644
--- a/rpcs3/Emu/Cell/lv2/sys_event.cpp
+++ b/rpcs3/Emu/Cell/lv2/sys_event.cpp
@@ -77,7 +77,7 @@ std::shared_ptr<lv2_event_queue> lv2_event_queue::load_ptr(utils::serial& ar, st
 		fmt::throw_exception("Failed in event queue pointer deserialization (invalid ID): location: %s, id=0x%x", msg, id);
 	}
 
-	Emu.DeferDeserialization([id, &queue, msg_str = std::string{msg}]()
+	Emu.PostponeInitCode([id, &queue, msg_str = std::string{msg}]()
 	{
 		// Defer resolving
 		queue = idm::get_unlocked<lv2_obj, lv2_event_queue>(id);
diff --git a/rpcs3/Emu/Cell/lv2/sys_interrupt.cpp b/rpcs3/Emu/Cell/lv2/sys_interrupt.cpp
index c2e4ebcd9a..63d8963ab2 100644
--- a/rpcs3/Emu/Cell/lv2/sys_interrupt.cpp
+++ b/rpcs3/Emu/Cell/lv2/sys_interrupt.cpp
@@ -28,7 +28,7 @@ lv2_int_tag::lv2_int_tag(utils::serial& ar) noexcept
 
 		if (!ptr && id)
 		{
-			Emu.DeferDeserialization([id, &handler = this->handler]()
+			Emu.PostponeInitCode([id, &handler = this->handler]()
 			{
 				handler = ensure(idm::get_unlocked<lv2_obj, lv2_int_serv>(id));
 			});
diff --git a/rpcs3/Emu/Cell/lv2/sys_timer.cpp b/rpcs3/Emu/Cell/lv2/sys_timer.cpp
index 4ebabcc245..ec0d3cd7e2 100644
--- a/rpcs3/Emu/Cell/lv2/sys_timer.cpp
+++ b/rpcs3/Emu/Cell/lv2/sys_timer.cpp
@@ -105,7 +105,7 @@ u64 lv2_timer::check_unlocked(u64 _now) noexcept
 
 lv2_timer_thread::lv2_timer_thread()
 {
-	Emu.DeferDeserialization([this]()
+	Emu.PostponeInitCode([this]()
 	{
 		idm::select<lv2_obj, lv2_timer>([&](u32 id, lv2_timer&)
 		{
diff --git a/rpcs3/Emu/System.cpp b/rpcs3/Emu/System.cpp
index 77675b7f45..14208d45f6 100644
--- a/rpcs3/Emu/System.cpp
+++ b/rpcs3/Emu/System.cpp
@@ -202,22 +202,36 @@ void init_fxo_for_exec(utils::serial* ar, bool full = false)
 
 	Emu.ConfigurePPUCache();
 
-	g_fxo->init(false, ar);
+	g_fxo->init(false, ar, [](){ Emu.ExecPostponedInitCode(); });
 
 	Emu.GetCallbacks().init_gs_render(ar);
 	Emu.GetCallbacks().init_pad_handler(Emu.GetTitleID());
 	Emu.GetCallbacks().init_kb_handler();
 	Emu.GetCallbacks().init_mouse_handler();
 
+	usz pos = 0;
+
 	if (ar)
 	{
-		Emu.ExecDeserializationRemnants();
+		pos = ar->pos;
+	}
 
-		[[maybe_unused]] auto flags = (*ar)(Emu.m_savestate_extension_flags1);
+	// TODO: Remove second call when possible
+	Emu.ExecPostponedInitCode();
+
+	if (ar)
+	{
+		ensure(pos == ar->pos);
+
+		(*ar)(Emu.m_savestate_extension_flags1);
 
 		const usz advance = (Emu.m_savestate_extension_flags1 & Emulator::SaveStateExtentionFlags1::SupportsMenuOpenResume ? 32 : 31);
 
-		load_and_check_reserved(*ar, advance); // Reserved area
+		// Reserved area
+		if (!load_and_check_reserved(*ar, advance))
+		{
+			sys_log.error("Potential failure to load savestate: padding buyes are not 0. %s", *ar);
+		}
 	}
 }
 
diff --git a/rpcs3/Emu/System.h b/rpcs3/Emu/System.h
index cff9c88902..4aa7e281ba 100644
--- a/rpcs3/Emu/System.h
+++ b/rpcs3/Emu/System.h
@@ -145,11 +145,11 @@ class Emulator final
 
 	std::vector<std::shared_ptr<atomic_t<u32>>> m_pause_msgs_refs;
 
-	std::vector<std::function<void()>> deferred_deserialization;
+	std::vector<std::function<void()>> m_postponed_init_code;
 
-	void ExecDeserializationRemnants()
+	void ExecPostponedInitCode()
 	{
-		for (auto&& func : ::as_rvalue(std::move(deferred_deserialization)))
+		for (auto&& func : ::as_rvalue(std::move(m_postponed_init_code)))
 		{
 			func();
 		}
@@ -200,9 +200,9 @@ public:
 		CallFromMainThread(std::move(func), nullptr, true, static_cast<u64>(counter));
 	}
 
-	void DeferDeserialization(std::function<void()>&& func)
+	void PostponeInitCode(std::function<void()>&& func)
 	{
-		deferred_deserialization.emplace_back(std::move(func));
+		m_postponed_init_code.emplace_back(std::move(func));
 	}
 
 	/** Set emulator mode to running unconditionnaly.
diff --git a/rpcs3/util/fixed_typemap.hpp b/rpcs3/util/fixed_typemap.hpp
index bdbdce657a..1e4e23e0e7 100644
--- a/rpcs3/util/fixed_typemap.hpp
+++ b/rpcs3/util/fixed_typemap.hpp
@@ -242,7 +242,7 @@ namespace stx
 			*m_info++ = nullptr;
 		}
 
-		void init(bool reset = true, utils::serial* ar = nullptr)
+		void init(bool reset = true, utils::serial* ar = nullptr, std::function<void()> func = {})
 		{
 			if (reset)
 			{
@@ -297,6 +297,11 @@ namespace stx
 				}
 			}
 
+			if (func)
+			{
+				func();
+			}
+
 			// Launch threads
 			for (auto it = m_info; it != info_before; it--)
 			{