Scale is a problem, yes. I knew the map is a box that is far too big, which in turn would cause r_speed problems, but at the time I created this map I had planned to test many things in it at once, including env_lasers (hence the green box). Later on, however, I ended up with this. I've been fiddling around with architecture, but as always I'm paranoid about r_speeds.
Mappy isn't a real big map nor is it fit for a minimod, so changing the size right now wouldn't matter much. Just there to show some cool things and that my current abilities aren't sub-par.
NOTE: When I played the map again, I noticed two small errors:
1. The door, when opening from the outside, swings through the wall.
2. When the elevator is going back down, it gets stuck in the ramp.
These are minor, but I'll fix them and put the map back up. I plan to use what I learned here to make a real map, but I have so many ideas I don't know which ones to choose.