We finally released the update that fixes many of the problems you’re having.
We accidentally introduced a bug that ignores your timer interval setting, but we have already submitted an update to apple to fix this issue. It should be out in a few days.
This update allows video rendering at HD resolutions, some of these are too big too be played on older devices. So if you’re experiencing green or blank video on playback, you may have to transfer the video to a computer to view it, or render at a lower resolution. You can also restart your device to free up memory. If you’re still having problems, please email us at labs at laan d0t com and tell us which model phone you have, and we will try to help out.