Slow respons to button

    All my Dimmer 2 react very slow when I press the button. It takes up to 5 seconds before the lights switch on. Is this normal behaviour?

    Button is a pulse button, connected to switch1 port

    I tried to use the warm-up functionality, but this doesn't not help.

    No, that isn't normal. Have you tried performing a factory reset? You might look at the debounce and transition time settings.