I have a similar issue with my pixel tree. I was using 1 strand (10 zig zag connected together with 45 each for a total of 450 nodes). I then changed it two use 2 ports and 2 strands. The issue is that I have 6 physical strings connected together for "first strand" and the remaining 4 connected together for the "second strand". In xLights it wants me to provide the number of pixels per strand. In this case they are different amounts 270 (6 strings) and remaining 180 (4 strings). I chose this for 2 reasons, to max out the first port and because my strings are doing zig zag I would have to flip half the strings so that the connection for #6 is at the bottom not at the top OR make an extension cable. I was hoping to change this in xLights because I can see where this could happen with other setups.
Thanks!
Yep like deplanche said just configure it as a normal tree and don't worry about where strand break up in the physical string. Then you just configure your controller manually like I do anyways.
