I have to reboot 2-3 times a week now.  If I do not, the speed becomes incredibly slow and unstable and my Echo Dots’ connections get dropped.  I’ve decided just recently to stop using A+ for WiFi and go with AT&T’s, and only use the A+ for the home automation as a hub only.  That has usually been pretty solid although a few of my 25+ devices have been sporadically dropped recently, and I had to pair again in order to restore functionality.