Diễn đàn hỗ trợ Firefox dành cho Android

Hi I have facing the problem with Android app, when I use the app very slow in 1 tab If I open another tab getting extremely slow then loaded the page not completed and some time suddenly restart My device specs Samsung galaxy A2 core

I said it all in the in the opening statement... What else am I meant to say?????????? It worked fine 2 weeks ago..? But now forget it!!!!!!! What has changed....you must know ... So don't ask me just fix it!!!!!!