Some plugins take more time to load than others. For example the open_in_browser plugin takes ~50x more time to load than most of other plugins. Some plugins need to be ready as soon as the app is loaded and for others sublime can live without them for a few more milliseconds. I think you should add a pre-ui and post-ui loading lists to allow faster-snappier loading of the application.
Сервис поддержки клиентов работает на платформе UserEcho