SpriteKit presentScene () Memory leak

I have a game with a Menu Scene and a Game Scene . In the Menu Scene, I start the game with:

let transition = SKTransition.fadeWithDuration(1)
let scene = GameScene(size: self.scene!.size)
scene.scaleMode = self.scaleMode
self.view!.presentScene(scene, transition: transition)

      

        
        
        
      

    

When the game is over, I use the following code in the Game Scene to return to the Scene menu :

let transition = SKTransition.fadeWithDuration(1)
let scene = MenuScene(size: self.scene!.size)
scene.scaleMode = self.scaleMode

self.view!.presentScene(scene, transition: transition)

      

        
        
        
      

    

So far so simple. But with each hop, memory consumption increases. Is there a way to avoid this? For example, reuse the menu scene?

This is how I load the first MenuScene into the GameViewController:

override func viewWillLayoutSubviews() {

    let skView = self.view as! SKView
    skView.showsFPS = true
    skView.ignoresSiblingOrder = true

    var scene = MenuScene(size: skView.bounds.size)
    scene.scaleMode = SKSceneScaleMode.AspectFill
    skView.presentScene(scene)   
}