I always loved eWeLink products, but I’m super disappointed with perfomance from Sonoff Mini R4 Matter and I discovered recently Switch M5 has same problem.
The delay between the command and the response is big enough, especially when used with automation via movement and, mainly, with virtual parallels.
Sonoff Mini has an ESP32. It’s enough to have a good experience, so I think this is happening due to poor software implementation, which Sonoff MUST fix via software update, but we know they won’t care about it.
I bought Matter because it should work locally, without no delay on cloud. It makes no sense use Matter with delay.
In this momento, I just brought five Sonoff M5, but I’ll return it as soon as possible.
to which Hub Matter did you add MINIR4M? I have added to SmartThing station. generally they work well but all MiniR4 and MINIR4M have problems with WiFi range. generally Matter devices from sonoff are still very unfinished.
My comment is because I don’t use the Zigbee radio in iHost, having spent quite some time getting the ST (V3) Zigbee running efficiently. Already have a Hue hub on a the furthest channel away that I can, and with not being able to control the Zigbee channel in iHost I didn’t want more ‘competition’ between hubs. Matter over Wifi another subject…
I turned off ihost. I added a snzb-03 sensor to ST STATION.
The response time is about 0.5 seconds.
Without logs it’s hard to tell what causes more delay.
And now an interesting fact.
Pressing the switch directly on the MINIR4M, the delay is also about 0.5 seconds.
It seems that this is a limitation resulting from the quality of the equipment.
SONOFF BASICR4 It also has the same delay. All new sonoff devices work like this.
I checked the old MINIR2. The reaction to the switch is immediate
The snzb-06P presence sensor also has weak components. They installed a light sensor that cannot measure light intensity. It only reports light or dark.
anyone has found a way to improve this 0.5 secs delay between the physical switch and the output? It is very annoying for the users, because when you press the button you expect the light to switch on. It works PERFECT on the Sonoff Dual R3, which has an ESP32 also like the R4, but controls two input/output, so the R4 with only one should be faster
Please Sonoff fix this. I’m not annoyed by tenths of second when activating through matter, wifi, etc… but the physical switch has to be immediate! (like the dual R3)
Yes, the new software is faster. Is not as fast as the Dual R3 (for me is the best. Is as fast as a direct mechanical switch), but is usable without noticing the difference if you do not pay much attention.
Also the MINI R3 (extreme) has been updated. It had the same delay problem, at least with the external inputs
You can ping from Europe to Japan, it will be less ms 
