I built lighting on production and packaged the game ready for hand in this week. I also tested the frame rate a little. I played my level on standalone mode on epic settings, using an Alienware computer in labs. Running the game as a packaged version will either be the same or faster.
The level seems to run between 40-50fps, peaking just above 60 at some points.
Here are some pretty screenshots of my level to bulk out this post more: