Same here. Just noticed my 6 collector in the front yard weren't quite collecting earlier this morning. Usually I pet and tend to my piggies twice in a RL game day, two feeders full with two spice plants set up.
A few days ago I collected at 9PM and then again at Noon and three collectors were full, but the forth was at like 40/60. I used to be able to fill six collectors in one night, with less pigs.