1. For Gcam/2Api Only install this via (redwolf/orange fox)recovery: https://goo.gl/aczdEC.Could you give exact your camera fix and gcam version? I installed this rom and using 1.035 patch for 8.1 and using gcam arnova 8.3b1 but when i take a photo first from front cam it doesn't work. I have to take a photo rear cam firstly and than front cam works however. And i didn't install any camera2api fix but manuel camera compabilities shows it's ok. Should i install camera2api even so?
And i want to ask to OP for good battery backup. Which kernel should i use for good battery? Or should i continue to use stock kernel? @irfanbd94