Yes as of right now all strings in a cluster are defined as the same length. The disadvantage is that if you have different sized strings on a cluster, you have to define the cluster based on the length of the longest string, so you wind up wasting some dmx channels. That becomes less of an issue if you have 12 universes of channels available. That will probably not be changed in this release, but likely in the next. The code as it stands now just passes a single string length to each of the processors that send the data to the pixels.