If you quickly type text, then the keys may "stick", i. E. instead of individual clicks, combinations like WIN + L are obtained. For example: when you switched the WIN + SPACE layout and then started typing with the letter D, the lock screen turns on. It's very annoying; When you turn on the game mode FN + F10, the WIN key is blocked, but combinations with this key occasionally work, like: WIN + A or WIN + S. Until the software starts from the keyboard, none of the macros will work. I hung up switching layouts on CAPSLOCK, but it does not work on the password entry screen. Again, backlight settings without software also do not work. Using AutoIt or autoHotKey (and the like) you can write normal macros for any keyboard or mouse. All in all, not worth the money spent.