Are you able to verify what your current battery "health" percentage is? My P2 is now ~3.5 years old and i still have a level of 81% and didnt face an issue like the mentioned. I am using the "AccuBattery" App to watch my battery's health state and the charging level.It's a battery problem. I use, and am steward over 3 more walleye. All now exhibit this issue. The battery is unable to sustain the camera and even sometimes just some heavy apps at levels up to 75% battery. The issue specifically with the camera is that the API has some sort of direct access to the kernel that maxes the CPUs when the camera is active. I underclock these due to the issues with the older batteries and if the camera turns on for any reason, I have to go into my kernel manager and reset my clock settings.