They work very spotty for me as well and normally revert to just using Alexa to control these devices. I have started to move away from Hue. I have had to many failures from Hue lights and started putting in Govee bulbs instead. They overall have a good color spectrum and are extremely more affordable. Basically it appears you can only send a limited ammount of commands thru the ISY and they the Govee api no longer will take commands. This may be more of a Govee issue than ISY but I would also love to know if there is another option to control these lights better.