thanks for your report about the Node4 1K.
Sorry that you´re not complete satisfied, but maybe you have been informed wrong before you bought the unit.
The Node 4 doesn´t calculate on it´s own, this would be necessary to do DMX channels expansion.
Or as the MA homepage stated:
The dot2 Node4 (1K) connects to a dot2 console or dot2 onPC software via a Plug & Play network connection. The user can easily choose output configuration 1-4 or 5-8 from the dot2 software set-up screen. The dot2 Node4 (1K) does not increase the channel capacity of an dot2 console, which is limited to 4,096 channels. Additionally the dot2 onPC software can output up to 1,024 channels of DMX when connected to an dot2 Node4 (1K)! Normal network rules apply allowing nodes to be placed remotely.
But we were able to re-create the behavior that you described in the second part of your post!
You´re absolutely right, 1024 patched DMX channels switch of two outputs- 1023 don´t.
This is a bug and it´s reported to the developers, I haven´t got any more informations about this right now, but as soon as there´s a feedback, we´ll contact you.
Thanks for your input man!