[android help] OrthogonalTiledMapRenderer and normal Spritebatch just a white box?

Hey I am using Libgdx to render a TileMap as a background of my game. I meight render some different layers lateron.
Without the tilemap Render and an single background picture it does work correct!
Something Strange happens when i use the TiledRender just take a look at it:

The white areas are normaly a Touchpad and a character...

@Override
   public void draw(SpriteBatch batch, float parentAlpha) {
      sprite.draw(batch);
   }

My Map where i render my TileMap does look like this:

public class Map extends Actor {
   private TiledMap map;
   private OrthogonalTiledMapRenderer render;
   public int[][] mapArray = new int[Config.X_SIZE][Config.Y_SIZE];

   public Map(TiledMap map){
      this.map  = map;
      this.render = new OrthogonalTiledMapRenderer(map,(((float)Config.VIRTUAL_VIEW_HEIGHT/Config.Y_SIZE)/(float)Config.TILE_SIZE));
      this.toBack();
   }

   @Override
   public void draw(SpriteBatch batch, float parentAlpha) {
      this.render.setView((OrthographicCamera) this.getStage().getCamera());
      render.render();
   }
}

any sugestions to that?

I guess it's a bit heavy to have 27x48 at teh screen. My nexus 7 does run it at 50-61 Frames or do you guess that would be fine? And if i start it it has around 40frames. If i lock the Nexus and unlock it, it does run at 60-61 Frames? is there something i made wrong?

.

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