This module has to be used with a modified Google Camera, recommended versions for OnePlus 3/3T are the ones from Arnova8G2 and Toylan009; you can also use the ones from Urnyx05 and MarcAnt01.
The app seems to crash when I open the video function, and only when using the normal camera. It works fine with the selfie camera but the second I switch the app disappears.