Hello, I have meizu pro 6, firmware 6.7.8.29 beta and android 7.1.1 I updated my phone few days ago to android 7.1.1 and since then my phone stared crushing, I often got notifications that some app isnt responding(like instagram,facebook, whatsapp), and my phone isnt working very well since update(it is slower than before update). Is it problem in update and what should I do?