I'm in Raleigh North Carolina area and experiencing the same thing!!! The past 2 months have been awful. Thought it was my old phone. Just bought the iPhone XR and can't even use it. Literally so slow I can't even open a webpage. THIS IS DEFINITELY VERIZON MAKING YOU UPGRADE. Considering changing carriers altogether! This is garbage! We pay good money for unlimited data but when I call to complain, of course, they recommend upgrading to the the higher unlimited plan.
Thanks Verizon for sucking.