Large question bank in a game vs. Performance/ loading impact

A client wants to have a question bank with 200 questions and wants to randomly present 50 questions only. Also wants to put this in an interactive manner in a game like 'treasure hunt' (or similar interactive game). 

My concern is about the loading time and moving through the slides with loading such a large number of questions specially using a game (with images and triggers to manage the game).

Any idea to minimize the performance impact and loading time?

Appreciate if you can share your hands on experience with developing such a large question bank in a game and managing the performance impact.

I am using SL3.


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