How to optimize memory usage when switching Scenes with Gluon JavaFX

Question

Increasingly High RAM Usage When Switching Between JavaFX Scenes

Please can you explain as I have been experiencing high memory usage with my Gluon javaFx application when switching between scenes with the following code:

Stage stage = (Stage) AnchorPane.getScene().getWindow();
Parent root = FXMLLoader.load(getClass().getResource("ShopMenuPage.fxml"));
Rectangle2D visualBounds = Screen.getPrimary().getVisualBounds();
Scene scene = new Scene(root, visualBounds.getWidth(), visualBounds.getHeight());
stage.setScene(scene);
stage.show();

Every time a scene is closed it does not release the full resources mainly the RAM and so accumulates with every window open and close resulting in the app crashing.