More likely a reflection of my partner and I's diet. A lot of broths, soups and similar. Even 30 minutes of the plate being static in the dishwasher means the food dries on and sticks.

We don't rinse our plates, just scrape them. If I have to hand wash 1-2 bowls and plates over the week it's a non-event. We're still saving a lot of water compared to hand rinsing all of our dishes before putting them in the Miele.