My tablet was unusable as I would need to touch everything like unlock or an app, or even power off multiple times before it might finally respond. After all the suggestions from reset to emergency mode or safe mode solutions and touching power and Vol down button at same time, nothing worked. I was annoyed by this small voice that announced everything I did... voice assist... with help from Tech, I found my way to shut this off... guess what? All the lagging issues disappeared. My tablet was back to normal and performing well again.... all because I shut off the voice assist.