Help for making maps?

[Nightmare]

I think i'm gonna go whip up a map full of trees just to see how it runs.

well, i did, and it runs fine. All the stats are in the low ranges (wqd, etc) except for 'evt' which is between 10 and 20 thousand XD. It runs fine on my computer, but that was just me in an empty map.
As for gameplay, it is probably nonexistant, as i simply layed out a staggered grid of trees in a simple rectangular room, but i haven't played it online yet.

I made a little maze lined with trees everywhere, so it was like a forestmaze thingy
lost about 20 fps as the only negative ._.