Good news, got particles figured out, shadows figured out. And a much better lighting solution. Bad news, it breaks pretty much every scene with custom lighting. Pigeon has some work to do to relight his scenes.
Oh also grid mode has been an issue, so now you will visually see the gird. It should be more intuitive with this update. Toggle it on and off while in select mode with the left X (rift), down(vive)