Do your Live Tiles work?

I've been using a surface rt for months and have ended up deactivating most of the live tiles because most of them don't seem to work well - some only update when you open the app, and others stop showing live information sometimes. Some examples: Calendar app live tile stopped working a few days ago; Music app live tile keeps displaying the track played last even after closing the app; bento news app live tile only updates the displayed headlines when I open the app (it's showing the same one headline for days now); Windows store live tile sometimes keeps the "1" update notification after installing the update until the next time I open the store app. Restarting windows doesn't fix any of these issues. With these kinds of issues the start screen with its live tiles does not make much sense. What are your experiences?