Paint issues

Looks like some sort of contamination on the surface . They sell products you can add to the paint called fish eye reducer that may help but my money is on the surface just not being perfectly clean.Are you wiping it with a naptha based solvent to clean it before shooting? are you going over the surface lightly with a tac cloth? Too much pressure on a tac cloth can leave a residue on the surface too. There are so many things