If there is anything we can do to help you, for example rendering parts or donating for your electricity bill, I'm in.

Edit: There seems to be an Avisynth TCPServer function for distributing clips over the network. However, the usability is in question and some people have reported that it did not increase speed.

The problem might be that you have to wait for the second machine to finish its script until you procede with the one on your first machine. On the first view I would say that I cannot confirm that, but I'm not so experienced in Avisynth.

Maybe someone can find out? All threads about this are pretty old.