di na po kaya ng 6/6plus and below devices ang ml. 1gb ram lang kasi sya bali parang sya na yung pumalit sa 5s na mabagal na tlga. upgrade ka nalang 6s pataas smooth na smooth
You got short on RAM but you are forcing the phone to play ML and ROS that demands high specs on RAM. Buy 3 to 4 GB RAM phones then. There's a cheaper one available in the market.
BTW IOS USER. I already filed a report twice to the ML community fortunately the problem of my iPad has been fixed but not for long ago. Sad to say but it crashes back again in the latest uodate.