Solution Found!! After many, many hours installing & reinstalling Ubuntu 20.04 and customizing my setup.
Serendipity struck!! I quit the "System Load Indicator" installed via the Snap Store and ***VOILA!!*** stuttering all gone. Yet this same app works just fine in 16.04 & 18.04. Is there a fix other than not using it? I run it all the time to monitor CPU, memory & internet usage. Thanks, Ken Wagner -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1876479 Title: Video scrolling is choppy, stutters. 340, 390, 435, 440 drivers tested. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers/+bug/1876479/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs