I think sometimes DR "costs" or has the potential to. I've had it hit hard before in work meetings where every one and every thing just slides away into meaninglessness and I stare at them in bemused care-lessness. Alice-in-Wonderlandednes is a great way to describe it! As though the whole situation means nothing at all. Sometimes I've worked hard to pull myself out of it and sometimes I am so into it I can't be bothered.
From a professional point of view I know it doesn't look great. What can you do.