Don't know that they will roast any faster; but, they would probably be more moist.
I have a cousin living in Plano; and, I get to visit. Plus, in a far away lifetime, I "enjoyed" my summertime Army Basic Training at Ft. Polk, LA. So, I do know a little about the humidity there.
Pure and simple...hot is hot whether it is a "dry" heat or moist. But, I thought that you Texans could "man up" better than that.
Gary