The real question is what are you getting after a few hours and no recycling. You really only recycle tons when building. I've had litestep taking up way over 130+ megs before from a memory leak in xlabel, which was reportedly related to transparent icons. You could see the memory footprint grow with each recycle. Right now I'm running that same theme, same modules etc, and it's only taking about 6.3 megs. My computer's been on all day.

Like DeV was saying, it could just be a setting in one of those modules.