Iva a house full of these GU10 bulbs, and they are only now finally getting the firmware in a place where they almost work. I’d say 80 % of my 24 bulbs work smoothly now, but it’s the 20 % that randomly dim, change colour, stop responding, etc. that cause the most frustration. They have improved over time though, and I’d expect in another 6 months they’ll work perfectly (I hope)