I am using a home automation server and i am controlling the yeelight products via tha Lan Control protocol.
I really like the scenes you are offering within the app.
Could you please share the start_cf commands you are using for example the sunrise and sunset mode?
did you change the sunrise command for ceiling within the app? If I use your provided code, I have two light flashes, one at the begin and the last tick is also a quite wide step.
If I start the sunrise mode via app it is much, much smoother.