We are encoding / decoding a lot. I think this is causing the node monitor to show up in perf and causes the CPU spikes. Could we recycle some of the arrays and shrink / grow them instead of creating new ones?

• TODO: add measurments

Options:

• Use faster JSON library instead of gob (https://journal.paul.querna.org/articles/2014/03/31/ffjson-faster-json-in-go/)
• Implement server side filter to avoid unnecessary messages to clients