We have just released "Time Rider" for google cardboard.

The game is designed to be an easy virtual reality experience. We are trying to create an experience that minimises dizziness and can serve as an introduction to VR.

You can download it here:

https://play.google.com/store/apps/details?id=com.eyalgames.timerider

Since this is a hobby game, we do not have a lot of devices to test on.

If you want to help, please post what kind of performance you get on your device (and what type of device it is).