I’m combining SK9822 LEDs with WS2815 LEDs using the pro expander board. I have 120 SK9822 connected to channel 0, another 120 to channel 1, and 284 WS2815 set to channel 7.
I have the pixel count set at channel 0:0, channel 1: 120, and channel7: 240.
On the set of WS2815 that are under mount here (not the vertical LEDs), the first few pixels (bottom left) eventually get stuck on a solid color. This only happens when using the expander board, if I drive WS2815 just from the PB, this never occurs.