Mouse

https://forums.opensuse.org/showthread.php/521293-KDE-mouse-polling-rate?p=2802164#post2802164
Invoking the mousepoll rate is not changing the interval value (‘Ivl=’).

Okay…and did you ever submit a bug report as suggested?

How would I summit a bug report?

A guide on submitting bug reports:
https://en.opensuse.org/openSUSE:Submitting_bug_reports

Submit bug report here:
https://bugzilla.opensuse.org/index.cgi

The bug was reported and fixed on my behalf.
How could you update kernel drivers with the patch fix?

I assume you are referring to this openSUSE Tumbleweed bug report (id=1034478)?.. there’s no resolution mentioned there as of yet though.