I use Arch Linux and I recently tried to play Minecraft competitive after switching to linux just to see that i am getting half my normal cps (click per second) I have an old logitech mouse that doesn’t have software and it use to work on windows just fine. I am not planning to go back to windows and it would be really helpful if someone could help me.
I’m assuming you are o x11, so it might be a compositor issue, try pressing shift+alt+f12 to disable it and see if it helps. Other thing you can try is lower the mouse pooling rate, for most Logitech mice it can be done through piper (it’s the extra repo).