I understand your frustration, but unfortunately have no ideas. I have nightmares every single night, without fail, for many years now. They are often VERY disturbing ones too. I've had medicine changed (although I got them before being on meds), I've had therapy. Nothing seems to work for me unfortunately and like you said... as horrible as they are and distracting day to day, you do 'kind of' get used to them in a way.
Speak to your doc about different options, there's a few out there. I hope you have better luck than I have

Take care.
__________________
Makes me that much stronger
Makes me work a little bit harder
Makes me that much wiser
So thanks for making me a fighter