That one only has Initial Press I believe, no long press or double-tap, that’s why it’s instant.
Buttons with more events always have to wait, either to the release to check if it’s short or long or for more taps, and then it’s a latency feast.
I know. I just wanted to show that there are ways to switch with fast response times and that the hub isn’t the bottleneck:
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Yeah, for toggling it’s not a problem, let alone if it’s just one light or you use SmartThings groups which have native handlers and send the commands fast to all the lights. Buttons like SOMRIG or BILRESA using the initial press or even the short release like RODRET are blazing fast in the V3 too.
Dimming is another story though, if a driver handles that the popcorn effect is there and that’s the hub struggling, even more if the lights “flood” the hub while dimming like Nanoleaf does that makes everything slower and introduces latency. Would be nice to test with a V4, my V3 turns into a turtle while dimming Nanoleaf lights 
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Tapo has updated the firmware of the Tapo P110M to 1.4.1 Build 251020. The power on state now is supported via Matter but I haven’t tested it so can’t tell if it will obey it or not. In fact, the option in Tapo app and the option in Matter are not in sync so who knows which one the plug uses 
They didn’t include support for On with Timed Off though.
Edit: Feb 27th 2026 (this was its own comment but I had too many comments in a row…):
The new Shelly Plug M Gen3 (Matter over WiFi) has been tested by @TapioX so I’ve added it to the list of known devices that work fine with the driver, thanks!
While it reports power, energy, current and voltage, it does not support setting the Power-on state or the On with Timed Off action.
Edit: March 11th 2026. Got myself a IKEA GRILLPLATS, so far it’s great! Every feature is supported, including power-on state and On with Timed Off. The power reporting is smart too, it’s quick to report changes when they happen but doesn’t flood the network.
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@mocelet Thank you very much for your excellent work! It’s been a huge help, I believe for all of us! I need your help, I bought some Shelly 1PM Mini Gen4 and I’m having a hard time using them with SmartThings, either via Matter or via Shelly Cloud. They are connected to a switch that controls smart bulbs (Ikea kajplats). The bulbs should always remain with power, and for that I use Shelly in detached mode. So when I toggle my wall switch, the Shelly detects a change of input (physical input) but does not cut the power to the bulbs. The plan was to use that input state change in an automation in smartthings to turn on/off the smart bulbs. And control the intensity and temperature of the lights according to the time of day they are switched on. But my plan didn’t work, because the state of the input is not exposed in SmartThings, either via Cloud Shelly or via Matter, it only exposes the main power (relay) button. I installed your Matter Playground controller, and it exposes power metering values very well, but does not expose the input state for me to use it in an automation, just the main state (witch cuts the power or powers the bulbs). Do you think it’s possible to also expose the input state in your matter playground controller? Thanks again.
I believe Shelly does not expose that state to Matter, at least according to the Matter compliance document there’s only one on/off endpoint and that must be the one controlling the relay.
If there were two on/off endpoints, one for the relay and another for the input state, my guess is that stock drivers would display them.
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Thank you so much for your reply. I have also tried TAustin Edge Drivers, but I had no success. I’ve created a Shelly 1 Relay with v1.9 witch exposes the main button and the input state, but I couldn’t link it to my real shelly (or didn’t know how to do it). Thank you once again.
I reached out to Shelly support team and it seams the input state in detached mode is planned for a future firmware update. I posted their reply here:
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I found a workaround! 
I posted the Solution I implemented here:
Super greatfull what you guys are doing. Took me some time to let the “Bilresa” do the dimming, but I learned it.
Overall quite happy with the Ikea stuff on my way to get rid of Zwave.
Question: The Alpstuga, when brought to Google Home, has an Off/On switch to dim the light. Now I automate that via Google Home (during the night / when away etc etc) but can you bring it to Smartthings?
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Glad you’re enjoying the driver, the problem isn’t bringing the on/off switch but everything else 
This custom driver is made from scratch, mostly for lighting, and has no support at all for sensors.
The ALPSTUGA switch is something SmartThings should incorporate to stock drivers, after all they have this partnership with IKEA so their products work great in ST.
The SmartThings Matter Sensor driver doesn’t support the on/off cluster. What needs to be done is pretty much the same as this PR for the Matter Thermostat driver:
Just a question of time until each Matter driver supports every Matter cluster…
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Clear. I understand. Not much use for you doing it from scratch as the rest of alpstuga driver works really perfect.
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