For me it’s pretty decent. It’s controlling all the lights, keeps track of presence (through ifttt though) and acts as a alarm. I use both zigbee and z-wave and i’m happy with both. Rarely the light doens’t trigger (sensor triggered but socket not switching) but this is about 2 out of 100 times.
433 (kaku) still doesn’t like a lot of actions in a short time here. If i switch a 433 kaku device manually it works 10/10, even a socked on the top floor, with 2 floors in betwean works flawless. However if i make a flow that turns multible kaku 433 devices on/off, nothing happens and after a minute suddenly the go off, 1 by one, or not. Made a work around for those by switching off 1 and starting the next flow with a delay. Could be fixed by now, never looked back again and not worth the effort. (6 months now)
Oh, When a lot of things happen at the same time speech still stutters, and flows also seem to have delays. Useally this is very temporary (10 sec) and only when playing around.
The most imporant thing is to make your flows as logical as possible and prevent the sending of unnecessary signals. Like when a motion sensor is tripped you want a light to switch on. Then it goes on. But when its tripped again and the light is already on you don’t want to send the on command again, so a flow should ALWAYS look like “if triggered and LIGHT IS OFF then turn light on”.
If you don’t do it like that homey will be sending signals all the time and will start to slow down a lot or become flooded.