Are you sticking to the hunting ground? There's a room in the tunnel and another in the temple that the wraiths and golems will wander into, but they don't spawn in there and stepping outside the spawn zone turns off spawning.

The critters have probably got too easy with all the mechanics changes. Turning 40s fighting and 10s searching into 10s fighting and 40s waiting around is going to make the area really boring, particularly if there's someone else in there with a script that gets them to the new spawns first. Hunting areas with just the one critter in them are pretty vulnerable to the spawns getting hogged.