I made some major improvements in the Hubitat drivers for the multi-white and multi-color bulbs..
- dramatically improved speed of CT operations and reduced packet count - Make sure to hit configure after updating.
- improved speed of on/off events also reducing packets
- improved speed of setLevel events also reducing packets
- bug fix for rare null value in setColor
Massive reduction in "popcorn" effect from hub group changes..
I have issued a pull request but if you want to get your hands on it before it gets merged: