Overall the camera is good. Just not great in any one area.
My previous phone was a Nexus 6p, and the OP3 is definitely a step under it in pretty much every area. Not as great of detail, both in good light and at night. The 6p focused better and faster overall. Speed wise, I'd say the apps open about the same time.
Overall not a bad camera, but definitely can leave something to be desired in all areas, especially with pixel, GS7/8, G6, etc all excellent shooters.