I couldn't fight this flickering yet
But I think the way I handle my background could be a hughe factor for this appearance. I have a 1024*512 big PNG for the background. I scale it during runtime every frame by 3, so it's 3072* 1536.
First I had this size, but slick said this would be too big for the current Hardware (onBoard Graphics). So we decided to scale it down do meet the requirements, since it is pixelart it could be scaled anyway.
But is this the proper way? I mean it works, but the flickering (only during camera translation) is not beatiful at all