Aeotec Door/Window Sensor 7 Series, slow?

Update: The lag was getting to be very annoying. I started to think the problem was in the outlet that controlled the light (long out of production). Out of frustration I ordered a new Zooz open/close sensor (the same type as the one the Aeotec replaced), and it is an instantaneous response. So, my conclusion is these Aeotec Door / Windor sensor Series 7 are painfully slow to respond. If anyone wants one, I'll let it go for $20 (plus shipping) OBO. That's roughly half the cost of new ones.