Since the recent upgrade from 15 to 16 on FF my smooth scrolling is jerky and no longer scrolls 'smoothly'. This happens on all websites where I want to scroll down fast. It will start to scroll, then stop, then catch up more quickly, then scroll, stop, catch up more quickly, and so on. I thought I might be that a particular page was using Adobe so updated my flashplayer and this helped for a few hours but then it went back to how it was! I have started in safe mode and with add-ons disabled, have rebooted, checked graphics drivers are up to date, etc, but none of this has made a difference. Only thing I can find to help me is a recommendation to disable smoothscrolling but I really really found smoothscrolling useful so would like to know what has changed between version 15 and version 16 to make it do this and how to fix it so I can continue to use it, or I'm going to have to go back to Chrome I'm afraid.