mouse acceleration profile on system settings doesnt do anything. also mouse speed setting is weird. i set my mouse speed on windows as 720dpi and it is too fast on kde with lv2 speed, but lv1 is too slow.

i tried x11-related commands.

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xinput set-prop <device> "libinput Accel Speed"

this changed speed but nothing else. and it is kinda broken like system settings.

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xinput set-prop <device> "Coordinate Transformation Matrix"

only changes speed.

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xinput set-prop <device> "libinput Accel Profile Enabled"

does nothing.

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xset m <acceleration> <threshold>

does nothing.

i was on dirty system which is upgraded from customized kubuntu 18.04 to 20.04 so i tried with official kubuntu 20.04 live image but faced same issue.
i have clean-installed kubuntu 20.10 but it didnt solved problem.
not checked this is driver related issue or affects all of ubuntu-like systems. if anyone have this problem, please share your experience.