fixed timer functions

src/core/application/ApplicationManager.cpp

@@ -512,6 +512,11 @@ bool ApplicationManager::initializeGame() {
     m_game = std::make_unique<Game>(m_startLevelSelection);
     // Wire up sound callbacks as main.cpp did
     if (m_game) {
+        // Apply global gravity speed multiplier from config
+        m_game->setGravityGlobalMultiplier(Config::Gameplay::GRAVITY_SPEED_MULTIPLIER);
+        // Reset to recalculate gravity with the new multiplier
+        m_game->reset(m_startLevelSelection);
+        
         m_game->setSoundCallback([&](int linesCleared){
             SoundEffectManager::instance().playSound("clear_line", 1.0f);
             // voice lines handled via asset manager loaded sounds