We all know what can happen if we use a reducer that is too fast for our environment. It sets up too fast, the base doesn't have time to flow out, blah-blah-blah.
But are there any detriments to the base coat for using too slow a reducer? I'm not talking about bugs flying in, or dust having a chance to settle in, or a boss saying, "Get that *&^%$#@ car out of the booth!" I'm curious about the base coat itself.
Assume "perfect" conditions. I'm in a hermetically-sealed spray booth, held at a constant 75*F. No dust, no hairs, etc. Just me, my paint gun, my base coat, and a reducer for an 85*F setting. In this environment, is there anything "bad" about using a slow reducer?