This is, sadly, a total clunker on my Macbook Retina Pro 2015. The loading was slow, the rendering seemed to be just a couple of frames per second. Using the t

This is, sadly, a total clunker on my Macbook Retina Pro 2015. The loading was slow, the rendering seemed to be just a couple of frames per second. Using the touchpad the actions seemed to be inverted (zooming in the opposite way to what I expected). I couldn't find any way to tilt the view, but didn't spend much time looking because the frame rate was so painfully low.