title_body: Drip Coffee Maker. Slow and then extremely fast
upvoted_answer: Not sure if you'll be able to get a definitive answer on this one, but to me it sounds like filter/coffee choking, and then somehow un-choking. This is something I've experienced with pour-over brews. I've used my Fellow Stagg [X] Dripper before, and at 15g of coffee it's perfect, however at 24g the weight of the coffee is too great and it presses the filter and coffee directly against the holes on the bottom of the dripper.
  
  Throughout the process I'll give the coffee a few stirs with a stir-stick, and it will immediately start flowing faster. It makes sense that you'd get a sweeter more balanced cup when the coffee doesn't choke. To me it also makes sense that you have a greater chance of it choking with more beans. Not sure how it could un-choke by itself, one theory is that once enough water pressure is present it creates a low-resistance channel where water flows through very quickly (and this water doesn't extract much coffee, rather would mostly dilute in this case).