Based in people saying the map hangs when loading the lamps I removed the 25 chunks of lamps and spent 8 hours placing 376 single lamps by hand.
It was the most boring thing I have ever done. I really hope this sorts out the problem.
I also added a ramp in the car park opposite spawn for you to move to where ever you want.
Hopefully the map loads for everyone now. If not the I give up.