You should have been OK with 5-10 minutes, as that wouldn't be enough time for the paint to form a skin on top, and the solvent in the second or third coat would mix with the previous coat. If the first coat isn't fully cured, but there's a skin on top, the subsequent coat's solvent will soften the skin, but the solvent in the previous coat will still try to evaporate thru the softened skin and cause wrinkles. Were there any recoat timeframe instructions on the paint? If so, they'd need to be followed closely.
