after camera app start (random times, sometimes it works one or two times) phone crashes enters boot loop and do not start then pressing volume down and power button enters safe mode, after safe mode restart can boot normally and work fine until you open camera app. On XDA forum there is tutorial how to downgrade to previous android, but you will loose all your data, or even brick your phone for good. Biggest problem is that asus doesn't allow to unlock bootloader.
