1 Corinthians 14:27-28, Let One Interpret
The counsel for edifying church service is to ensure that anyone speaking in a foreign language has an interpreter. It should be limited to at most three languages. I recall attending a meeting with English as the main language with a Mandarin translator interpreting after each sentence. And there is another at the back of the meeting hall interpreting the message into Bahasa Indonesian. It is true that the message of the main speaker was slowed down by the Mandarin translation for the sake of the Chinese speaking folks. Also, the third interpreter could be heard also, there was some degree of distraction for those listening message in English. However, for the sake of others, it did not bother those present.