diff --git a/Utilities/File.cpp b/Utilities/File.cpp
index 8b0b90d52a..67f6d417da 100644
--- a/Utilities/File.cpp
+++ b/Utilities/File.cpp
@@ -1924,7 +1924,7 @@ bool fs::remove_all(const std::string& path, bool remove_root, bool is_no_dir_ok
 	return true;
 }
 
-u64 fs::get_dir_size(const std::string& path, u64 rounding_alignment)
+u64 fs::get_dir_size(const std::string& path, u64 rounding_alignment, atomic_t<bool>* cancel_flag)
 {
 	u64 result = 0;
 
@@ -1937,6 +1937,11 @@ u64 fs::get_dir_size(const std::string& path, u64 rounding_alignment)
 
 	for (const auto& entry : root_dir)
 	{
+		if (cancel_flag && *cancel_flag)
+		{
+			return umax;
+		}
+
 		if (entry.name == "." || entry.name == "..")
 		{
 			continue;
diff --git a/Utilities/File.h b/Utilities/File.h
index 7a6b4d5fd5..169eb5b589 100644
--- a/Utilities/File.h
+++ b/Utilities/File.h
@@ -669,7 +669,7 @@ namespace fs
 	bool remove_all(const std::string& path, bool remove_root = true, bool is_no_dir_ok = false);
 
 	// Get size of all files recursively
-	u64 get_dir_size(const std::string& path, u64 rounding_alignment = 1);
+	u64 get_dir_size(const std::string& path, u64 rounding_alignment = 1, atomic_t<bool>* cancel_flag = nullptr);
 
 	enum class error : uint
 	{
diff --git a/rpcs3/rpcs3qt/game_list_frame.cpp b/rpcs3/rpcs3qt/game_list_frame.cpp
index 1f4c06bddb..9d28f4fc5e 100644
--- a/rpcs3/rpcs3qt/game_list_frame.cpp
+++ b/rpcs3/rpcs3qt/game_list_frame.cpp
@@ -156,6 +156,13 @@ game_list_frame::game_list_frame(std::shared_ptr<gui_settings> gui_settings, std
 			item->call_icon_func();
 		}
 	});
+	connect(&m_size_watcher, &QFutureWatcher<void>::canceled, this, [this]()
+	{
+		if (m_size_watcher_cancel)
+		{
+			*m_size_watcher_cancel = true;
+		}
+	});
 	connect(&m_size_watcher, &QFutureWatcher<void>::finished, this, [this]()
 	{
 		Refresh();
@@ -779,9 +786,11 @@ void game_list_frame::OnRefreshFinished()
 
 	Refresh();
 
-	m_size_watcher.setFuture(QtConcurrent::map(m_game_data, [this](const game_info& game) -> void
+	m_size_watcher_cancel = std::make_shared<atomic_t<bool>>(false);
+
+	m_size_watcher.setFuture(QtConcurrent::map(m_game_data, [this, cancel = m_size_watcher_cancel](const game_info& game) -> void
 	{
-		if (game) game->info.size_on_disk = fs::get_dir_size(game->info.path);
+		if (game) game->info.size_on_disk = fs::get_dir_size(game->info.path, 1, cancel.get());
 	}));
 }
 
diff --git a/rpcs3/rpcs3qt/game_list_frame.h b/rpcs3/rpcs3qt/game_list_frame.h
index fe91eb2033..0395476bc1 100644
--- a/rpcs3/rpcs3qt/game_list_frame.h
+++ b/rpcs3/rpcs3qt/game_list_frame.h
@@ -161,6 +161,7 @@ private:
 	QFutureWatcher<void> m_size_watcher;
 	QFutureWatcher<void> m_refresh_watcher;
 	QFutureWatcher<movie_item*> m_repaint_watcher;
+	std::shared_ptr<atomic_t<bool>> m_size_watcher_cancel;
 	QSet<QString> m_hidden_list;
 	bool m_show_hidden{false};