In sandbox, I set the zombies to be sprinters and their activity to night, but they still sprint during the day. When I spawn into the world the zombies seem to work accordingly to the settings, but, after running around for a while and gathering a bigger horde of zombies, some of them start sprinting. As soon as one of them starts sprinting, the rest of the zombies that I run into also instantly sprint, despite the fact that it is still daytime.