Every time I have to update Avast, at the end a prompt comes up with options to postpone it for different amounts of time. I personally want to restart my computer when I want to, so I've picked 'next century' and 'next week' to delay it (haven't tried 'tomorrow'). However, the popup always comes back the same day, no matter how many times I postpone it; Haven't timed it, but it feels like ~2 hours.
It's my computer, Avast. If I have reason to wait, let me do it in piece.