is this what we are talking about? I too have this problem
first picture is my problem
second picture is after a wet sand and buff
3rd picture 50/50shot
I am using the sherwin wiliams dementions base and clear.
this problem comes and goes for me. I am trying to narrow it down.
I am thinking to many base coats and not enough dry time.. first problem is the demensions base is so (water down) needs alot of coats to fill colour correctly.
I use to paint with the Sherwin Williams Ultra 7000 which was so great but can't get local no more. so working with what I can
after the clear is buffed etc I too see it come back to a little foggy after a week or 2.
base is mixed 2:1 and clear is 4:1 I am using a med hardner
temp inside is about 15c
its winter in canada so can't do much more in my paint room