That sucks. I'm sorry you have a manager who isn't seeing the obvious. But speaking as a manager it's always possible to miss the obvious, so I always encourage

That sucks. I'm sorry you have a manager who isn't seeing the obvious. But speaking as a manager it's always possible to miss the obvious, so I always encourage people to make it as clear as possible (please, literally speak about it) where things are difficult or challenging so everyone can understand that the quality is inversely related to quantity.