Why does my mouse jump rather than move smoothly?

The mouse sometimes “jumps” rather than to move smoothly. It seems that also click not always work. Is it because of Firefox in the background?

i5 CPU (good however somehow old one), Ubuntu Linux

Which version of Ubuntu you running?

I am running Ubuntu 19.04.

There was an issue with mutter that caused some stuttering for people with apps and the mouse pointer. A patch has been submitted in the GNOME GitLab. You’ll see these performance improvements in Ubuntu 19.10 when it’s released on the 17th or you can install the beta.

https://gitlab.gnome.org/GNOME/gnome-shell/issues/1411

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