There may very well be something of that sort but nothing that I know of.
Area resetting is run by ticks and happens roughly every 3 minutes if no one is in the area; less often (15 minutes) if some one is. Also note that objects lying on the ground will not be regenerated if anyone is in the area when it resets.
Looking at the source in db.cpp, there is code to reset every 15 ticks, unless you have set the flag "newbie_area_resets" in aedit. In this case the area resets every 1 or 2 ticks.
You could always change that to either use a different figure, or add extra flags for different intervals (newbie, medium, hard for instance).