How often are sims checked? It seems rather arbitrary- what determines how often a grid or sim is checked for traffic? I am looking at my page stats and it says 2 hours ago. Sometimes it checks every few minutes- I have been walking about and landscaping and stuff- so it's not like it thinks I am not really there- I do have a couple of NPC's but they are listed in the exclude list..
I was even giving an alt self some items to take back to her/my other grid-