I finished a table top with about six coats of GF High Performance Topcoat Gloss over a couple of coats of Zinsser sealcoat. I got minor but consistent orange peel over the entire top after shooting each coat. After the final coat I sanded the entire top with 320 with a sanding pad and removed most of it, and will finish with a coat of paste wax, but I'd like to avoid the orange peel effect next time.
I shot the finish with a purple HF HVLP gun which usually gives pretty good results, in a heated, well ventilated shop. Temps were in the high 60s, and the relative humidity is very low. The finish wasn't thinned.