That isn't my experience at FLL. When things are bad in ATL, most of the system seems to slow down. JFK slows down international flights. Check online for delays from other cities and I"m sure they will be slowed down as well.
One a positive note, the SC at FLL is very nice and the agents are the best. You probably have Donna, Helen, Terry, and/or Robert working today. They are great! Enjoy!