Still the same issue it has always had on Mavericks – stuttering audio with video. I read that 10.9.5 supposedly fixed it and it didn’t. This has been an issue for about two years now. I had dropped DPS, but thought I would try it again with 10.9.5, but same old story. You can only use it by loading it only when you use iTunes, but it is fatal when you watch any video. I wonder if it is cured in Yosemite, but I don’t have high hopes. It is not much use really when you have to keep it quitting and loading it to use it.