Years of playing drums had it's toll on my hearing,to my level of hearing, it sounds just about perfect,the fact it's not a mechanical "click" is the added bonus as well... has the duration of the signal somewhat altered as well? I mean, is it flashing at a faster rate/slower rate ( more than likely, it would be a faster rate)....
If that is the case, it might be a sign of the electronic module going out ( potentially defective). Talk to your dealer and ask to hear another one in an MKC on their lot and compare!