We encountered many issues on our last few days.
Some of these included:
- Difficulty to build
 - Difficutly to record preview
 - Difficutly with file size
 
Most of them where due to lack of optimization. Unfortunately, we did not have enough time to fix all issues.
However, I believe that taking into account the scope of the project and the timeframe, we have done a very good job and I am really proud of the final result.