The lasers should be faster if you have the very latest SVN client/server: in these you can set the dynamic light to be turrned off at the end of the laser per-laser, and that is set so in the map to improve performance (especially in the grid room).
I don't remeber where the entity zoo map is, it's on div0s site somewhere. However I do have it and I will upload it to a folder on my site when I get home and will post a link to it. It has most all the entities and is very informative as how to use them thusly.