A second possibility is that my conical is doing something that makes the yeast less effective (e.g., trapping them down at the bottom in less surface area…makes sense for a lager, but for ales?). Anyone else use conicals and notice they have to do anything different?
I could try increasing my pitch (I use a 1.5 L starter that I typically get going the day or two prior, mostly just to wake up the Wyeast or WL pitch). I put yeast nutrient into the starter, but not into my boil kettle.
Any other places I should look to solve this?