Learn how to configure the realtime function of the plugin
You have to choose beetween two apis: google or bing. I personally suggest using bing because google may not work.
You only need it if you are using bing.
You can follow this simple gif to learn how to retrieve it:
Of course, it will reduce lot of delay.
Just run /multilangadmin clearCache to clear the cache.
No, all tasks are executed async. But it may add a bit of delay before your message is sent(if you use the cache, it will happen only the first time you send that text)