I have a client that operates using a mix of MACs and PC's. Mainly laptops. They all connect to the server, email, internet, printing and time capsule backups across wi-fi. About 4 months ago, they started getting dropouts to the internet and local network whilst connected to a strong wi-fi signal strength.
This randomly keeps happening and clearly the client is getting annoyed, as am I at the amount of time I've spent try and fix this. One day it could be fine, the next its terrible.
I've replaced the router, had two different WAP in, changed the SSID, changed the password, its using WPA(2)-PSK.
Right now I'm going across all devices turning them off to see if this has any effect or not, but could use some guidance.