I've recently upgraded my Nexus 4, Nexus 7 and Nexus 10 all to Android 4.4 and as soon as I upgraded my Wi-Fi has been awful.
The Wi-Fi is incredibly unstable, steaming media has major buffering / intermittency issues, messages sent over instant messaging apps are sometimes instant and sometimes take 30+ seconds to send.
Skype is the most telling of the issues as it randomly loses connection and my notifications literally never come through...
Router Wi-Fi Settings:
I've tried Channels, 1, 2, 4, 6, 8, 10 and 11
I've also tried adding
Wi-Fi is Always On, Wi-Fi Frequency is Auto or 2.4, Wi-Fi Optimization is Off.
The wireless / wifi works fine on other tablets, laptops and wireless devices just my nexus devices on 4.4
Anyone got any ideas?