diff --git a/Utilities/Thread.h b/Utilities/Thread.h
index 7917744f24..e31158047c 100644
--- a/Utilities/Thread.h
+++ b/Utilities/Thread.h
@@ -286,13 +286,6 @@ public:
 
 	// Sets the preferred affinity mask for this thread
 	static void set_thread_affinity_mask(u64 mask);
-
-	// Spawn a detached named thread
-	template <typename F>
-	[[deprecated]] static void spawn(std::string_view name, F&& func)
-	{
-		new named_thread<F>(thread_state::detached, name, std::forward<F>(func));
-	}
 };
 
 // Derived from the callable object Context, possibly a lambda
diff --git a/rpcs3/Emu/RSX/Overlays/overlay_osk.cpp b/rpcs3/Emu/RSX/Overlays/overlay_osk.cpp
index 9d70bfa838..aef23b3ba1 100644
--- a/rpcs3/Emu/RSX/Overlays/overlay_osk.cpp
+++ b/rpcs3/Emu/RSX/Overlays/overlay_osk.cpp
@@ -187,7 +187,7 @@ namespace rsx
 			fade_animation.duration = 0.5f;
 			fade_animation.active = true;
 
-			thread_ctrl::spawn("osk input thread", [this]
+			std::lock_guard{m_threadpool_mutex}, m_workers.emplace_back([this]
 			{
 				if (auto error = run_input_loop())
 				{
diff --git a/rpcs3/Emu/RSX/RSXThread.cpp b/rpcs3/Emu/RSX/RSXThread.cpp
index 78c13e1d58..7153a26c7b 100644
--- a/rpcs3/Emu/RSX/RSXThread.cpp
+++ b/rpcs3/Emu/RSX/RSXThread.cpp
@@ -497,7 +497,7 @@ namespace rsx
 
 		vblank_count = 0;
 
-		thread_ctrl::spawn("VBlank Thread", [this]()
+		auto vblank_body = [this]()
 		{
 			// See sys_timer_usleep for details
 #ifdef __linux__
@@ -561,9 +561,11 @@ namespace rsx
 
 				thread_ctrl::wait_for(100);
 			}
-		});
+		};
 
-		thread_ctrl::spawn("RSX Decompiler Thread", [this]
+		g_fxo->init<named_thread<decltype(vblank_body)>>("VBlank Thread", std::move(vblank_body));
+
+		auto decomp_body = [this]
 		{
 			if (g_cfg.video.disable_asynchronous_shader_compiler)
 			{
@@ -594,7 +596,9 @@ namespace rsx
 			}
 
 			on_decompiler_exit();
-		});
+		};
+
+		g_fxo->init<named_thread<decltype(decomp_body)>>("RSX Decompiler Thread", std::move(decomp_body));
 
 		// Raise priority above other threads
 		thread_ctrl::set_native_priority(1);