It works well for me.Honestly I know some people haven't had the best experience with it but I absolutely love it. Last night I got home. Opened the app in Roku, and it already had the women's game right there for me since it knows my preferences.
My only complaint is the rewind/fast forward feature is clunky and doesn't give any reliable information as to how much you have rewound or fast forwarded so you are doing so blind. When you enter the game late you have no idea how far back you have gone. It will do nothing for a while then suddenly jump back. You can't watch when you get through commercials since the time stamp doesn't work properly and it doesn't show you images of where you are like a DVR. It's a crap shoot but it is a minor beef.
The picture quality has been consistently great on my Xfinity box as others have mentioned.