https://askubuntu.com/questions/1351909/lowering-mouse-debounce-time
What you're looking for is called "debouncing". I think the answer I'm linking here is wrong, the time is not tuneable in libinput. If you want to go through the ordeal of re-compiling libinput and shoving it in your system (without breaking it all?), it is
debounce_set_timer() and debounce_set_timer_short() in evdev-debounce.c. I think it's the ms2us(25) call.
You can probably hack the input system. That'd probably be somewhere in libinput. If there's no configuration for something like this you could apt-src libinput, hack it, recompile and replace the existing libinput. 😂
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