I had Trinus Gyre working really well using my Nexus 6 in a Colorcross, and freetrack for the tracking, but when I went back to it again I have a problem. The image keeps flickering back to the centre (front) view, so if I look left it alternates between the two views. I can't see anything different from the first time round but also can't find a way to stop it. I don't know if it is Freetrack, Trinus or ED making it happen. Any ideas?