Experiences with large Rise/Storyline projects in review?

Hi all,

I was just wondering if I could get some insight in to the experiences of others.

We have created a media heavy project in Rise, which contains a number of Storyline elements. We have been testing this on review, with roughly 20 users at once, and finding that media is slow to load.

I expect this is because review is not designed to be the final hosting solution, but rather a space for individual light testing. 

Does anyone else have similar experiences? How do you test with larger groups? Are you experiencing something different?