Hunting area restrictions cause stutter

[RFC3251]

When hunting jobs are restricted to a very large area (ex., covering most of a 400x400 map, excluding just a few small areas), the game pauses briefly every 2 seconds or so. Changing the restriction to a small area (ex., 100x100) or to the default "unrestricted" area makes these stutters go away.

Just to clarify, these pauses are not related to pawns actually performing managing tasks at the table; they happen every couple of seconds as long as there's a hunting job restricted to a large area.