Every time I wake my late-2013 rMBP from sleep (whether by opening the lid after being shut for a long time or by pressing the keyboard after it's shut off after a short time) it take FOREVER to connect to the internet. The WiFi itself usually connects quickly, but it takes an age for the internet to become available. I have a BT Home Hub 5 router and I've tried having separate SSIDs for he 5GHz band and 2.4GHz as well as having a single SSID for both, the problem happens either way. It also happens at my mum's house, she has a Linksys X3500 router. The length of time it can take to find the internet after wake from sleep varies from 10-15 seconds to 5 or 6 minutes. No other device in the house (iPads, iPhones, Windows laptop) exhibits this issue. I've tried turning Bluetooth off, didn't help. I've tried deleting the Bluetooth PAN in Network Settings, didn't help. I've removed all known WiFi networks except mine, didn't help. This happened a few months ago too, and I wiped my Mac back to factory settings and started fresh - this fixed it for a few weeks, but now it's doing it again. OS X 10.10.3 Any ideas?