That is weird A627T, what QD are you working with? If it leaves white residue, it sounds like it contains a bit of carnuaba into it; makes me think it's like a quick wax :dunno
My suggestion if you don't like it...discontinue the use of it and find yourself another quality Detail Spray/quick detailer. Also, when is the last time you ran a paint cleaner/polish on the car? That step, which should be done a few times a year, would definitely help in removing the residue that is on the car presently.
Great to have you here on DC :welcome