As part of the vehicle park, Balance is supposed to be no-build except for the rezzing area. For some reason it's all buildable, with the result that the road track and other places are filling up with random objects. There are also over 1,000 active scripts, undoubtedly from all the objects people are filling it up with - not a good thing, as these sims are running two to a core.
For example: Right now, there are 316 giant rotating mushrooms, each of which has Follow, Replicate, and Rotation scripts.