Should summary be after each question?

I am helping to rewrite an app that is written for quizzes. Our investors are sure that putting summary after each question is necessary to keep audience attention. Sadly it is making the whole quiz time-consuming. (so making a quiz for 50 questions is almost impossible, because how much time it would take.) I not allowed to send you actual print-screens from the app, but I just made some wire-frames, so it would be easier for you to understand what I am talking about. The wireframes diagram shows how it looks right now. The audience is seeing one screen at a time, it is displayed on a projector or big screen.

I am thinking if the investors are really right about the audience, my intuition is telling me that we shouldn't show results after each question. Also, I not sure if it is good for the participants of the quiz. They see if their answer is good on their own screens, and how it effect their group result.