That's a lot. I do get the occasional white spots but never that many or large.
I guess you clean all the equipment thoroughly with no residue and the spots are too large to be airborne from drying, I think.
That probably only leaves the chemicals or the water. Maybe your water has a lot of particles that stick to the soft emulsion during the wash?
Or maybe you should replace you chems in clean bottles?
Sorry, no answers, just guesses.