spidering / flaking paint right after applying

I am having an issue with flaking / spidering pain right after applying the paint
the paint is applied in enclosed booth, the area sanded with 800 grit and surfaced with paint prep solution

every time it is flaking in a different area, one time it came out with no flakes or spidering we cannot figure out why this is happening

looks like snake skin, it starts to flake this way right after paint is applied

please help!