On Win 10 ours randomly changes dpi. The multi-user setup is abysmal; one user can screw up another's settings. It spams notifications when you cause a quick-change-dpi event (you can turn off notifications, it's a weird default). It works very badly without the app running, ie it's a soft-mouse tailored to Windows. There's no Logitech Linux app (though the one I use is superior to the Windows app, IMO, clearer with less cruft -- https://github.com/libratbag/piper). Latest update reverted my dpi settings.
I use mine on Linux but I don't use any application for settings. I set mine under windows using the internal memory on the mouse and I've never had it change anything randomly on me besides unknowingly hitting the physical DPI button by accident
I'm not particularly impressed.