I stopped watching it last year already because there was way to much focus on the judges and too few acts. It seemed like more time of the episode was devoted to shtick etc than to actual acts.
It also gets really dragged out with the quarter finals, semi finals etc. And a 45 min show for the results is silly - I just skipped through to the 1 minute where they announced the results for each group.
Now I just watch the occasional good act on youtube and save lots of time!