How to distribute child processes to multiple servers in node js?

Question

Node.js

There is a main websocket server on node. It listens for connections to itself and launches child processes via exec on the same machine. Resources became scarce, since one process can eat 70-80 CPUs, and we thought about load distribution. Now an 8-core CPU is clogged at 80-90%.
Of course, you can take the most powerful server with a large number of cores, but it would be cheaper to scatter all its children on other machines.
Remote launch via ssh has been implemented, but how to achieve uniformity?
*Each child process has a parameter that affects its final gluttony. That is, at the launch stage, we can roughly understand how much he will eat.