Thanks for that. I installed it and although it improved things somewhat there is still a bit of jerkiness with each scroll movement. I use Logitech Options software in support of my Logi Craft keyboard and MX Anywhere 2 mouse. I have smooth scrolling enabled in that application and the Chrome Web store Logi Smooth Scrolling extension installed on both Chrome and Edge browsers and the scrolling is buttery smooth. Just can't get the same results in Opera, having tried all sorts ...