When you do modification, you don't have to always rebuild the full project, and reinstall the plugin on your dev environment.You can build only the modified part (for example, if you only modified client files: `npm run build:client`).Check the `package.json` files for available build scripts.
When the plugin is already installed on your dev instance, and you haven't changed any dependency, you can quickly install your work by following these steps:
The [livechat-perf-test](https://github.com/JohnXLivingston/livechat-perf-test) repository contains some tools to make performance tests.It can be used to evaluate code improvements, or find bottlenecks.