Need help for multiple instances

[soulblvd]

Hello everyone, I am running multiple instances to speed up the recording process, I run this in the terminal:

node timesnap.js url params1 & node timesnap.js url params2 & node timesnap.js url params3 & node timesnap.js url params4 & node timesnap.js url params5

This command will run 5 instances at the same time, I'm not very good at Nodejs, so I wonder is there any faster way to do this? I am facing speed issues because I want to record videos at 4K60fps, and I need to capture the frames as PNG to keep the background transparent, so the recording is very slow.

I am also planning to build a few more computers to run the script at the same time, to speed it up even more, is Linux the best choice for operating system?

Thanks.