Hi, I need someone tp help me find out what the problem is I have been facing a serious issue with firefox and not me only as I have searched facebook is so laggy on firefox, I can't browse normally and everytime I search for something or try to send a message the browser keeps stuckking and always shows ( this page is slowing down firefox, I can't browse facebook on firefox)

I have already disabled all addons, refreshed, uninstalled also Have oem win 10 to the latest update also booted into save mode with networking the issue is not in my laptop I own (lenovo y700) which was quite good gaming laptop with 16gb of ram and 6700hq i7 processor so why there is no one wanting to tell me the truth about that ?