refactoring:

src/main/java/Snake/Controller.java

@@ -42,7 +42,7 @@ public class Controller {
         initializeInputHandling();
         addButtonActionListeners(window);
 
-        timer = new Timer(10, new ActionListener()
+        timer = new Timer(100, new ActionListener()
         {
             @Override
             public void actionPerformed(ActionEvent e)