The ellipsis will probably run slow no matter what because it only has 1 gig of ram. I am happy with the lollipop update. I thought it wasn't going to get it.
Have used 5.1.1 for almost 24 hours and it does not speed up the system, quite the opposite. The system will seem more responsive and then slow down as it attempts to process. Will give it time but this is not encouraging.