I need to hang some drywall; my ceiling has a couple spots of uneven-ness. There's a few spots that are about 1/4" out of whack and another spot where joists+hanger are a little less than 1/2" down.
It's a normal sized room and the spots that are either bulging or sunken are all located in the same area. I am wondering if that warrants furring out the ceiling or will the drywall flex enough where there's a half an inch level difference?