Since I upgraded is like I lost my cellphone. I barely can use it, and everything takes up 5 times more time than it did with lolipop. Sending a voice message in whatsapp becomes a titanic task, because even if I release the button, it still takes 5 secs to defreeze and send. Facebook doesn't work, messenger doesn't work. I can't even open them due to anr's popping and resetting the app. I've tried everything, factory format, reboots, blablabla, and nothing. Nothing works. If you're not gonna let us go back to 5, then please deliver a serious version, because this is not what users deserve.