Sim overload, the spreadsheet.
Yes, more stuff that we as users shouldn't have to worry about.
I've been suspecting for some time that the overhead of idle scripts drags down sims more than what the scripts are doing. Here's some evidence. Went around Robin Loop in Heterocera, which has a nice variety of land uses, and took a screenshot of the statistics bar in each sim. (The statistics bar is under Advanced->Performance Tools->Statistics Bar in Firestorm. There's a lot of stuff