every time a video in YouTube reach 1 min it get hang or error

Yesterday I just use YouTube website on my official firefox app for mobile and it works fine. But today when I try to look for a specific video when the clips reach 1 min it starting to hang and error... at first I thought it's just the content so I try other one still same after 1 min it get hang, so I try to remove some of the extension I have and disable them all and try again but still after 1 min it stop, so I try it on beta the same video same website I sync my firefoxes browser with one account, I also try it on nightly and also the video play smoothly and its finish it same with beta, but the official seems to have a problem... my official firefox apps is fully updated... do you think i should keep using he beta and nightly while the official is kinda on a bugs error..., I hope mozilla solve that fast.. keep up the good work