How to optimize QBCore Royale Edition FiveM server for low resmon and stable performance? QBCore Store

I'm currently working on setting up a QBCore-based FiveM server, but I'm facing performance issues, especially high resmon usage and occasional instability when multiple resources are running.

Right now my setup includes multiple scripts, maps, and custom assets, and the resmon usage sometimes spikes above 1.0ms which affects gameplay smoothness.

I'm trying to achieve a more optimized setup with:
- Low resmon (around 0.4ms to 0.6ms if possible)
- Stable performance with multiple scripts
- Clean resource management
- Minimal lag during peak player count

I’ve seen some prebuilt setups that claim to be optimized and plug-and-play, and they seem to maintain low resmon consistently. For example, I came across a setup like this:
https://www.youtube.com/watch?v=yC3whXDnyg0

My question is:
What are the best practices to actually achieve this level of optimization in a QBCore server?

Specifically:
- How should scripts be structured or optimized?
- Are there any common mistakes that increase resmon usage?
- What tools or methods can be used to monitor and reduce performance impact?

Any advice or real-world experience would be really helpful.