I am in a Verizon LTE Advanced city (Amarillo, TX). My LTE speeds on my 6 used to be 30-60 Mbps. Now my 6, wife's 6 and my 7+ all get about 2-8 Mbps. All have good signal (3-5 bars). Anyone else have this or know a fix? Verizon CS does its usual "reset settings" routine. I have tried restores and network resets to no avail.