It certainly would, Ms. Normandin.
Right now, I would say that 75% of the work is interpretation from English to French and 25% is from French to English. I don't have statistics, I am providing figures based on my personal impression.
Of course, members are free to speak in the language of their choice. If they want to speak in their second language, that is their right. We have to interpret them.
To answer your question, if the French-speaking members start speaking in French, it will surely lighten the load.