Heya
Not sure if anyone else agrees with me
I have recently bought xiaomi gateway and its sensors (temp, door, motion) not only they are cheap, easy to find and i find it faster than my zwave.
My zwave set up consist of Aeotec Zwave USB Stick S2 + 2 Multisensor 6. Compared to zigbee which is almost instantly, aeotec zwave takes approx 2-3 seconds longer. Is there a way to improve it? It maybe a user fault rather than a device fault 
What do you guys think?