Motorola Droid XYBOARD 10.1 :: WiFi Not Connecting Automatically - Keeps Searching

I have my Droid Xyboard set so that the if the screen turns off and its not plugged into the power adapter, the wifi will disconnect. (Under Wifi Settings > Wi-Fi disconnect Policy > select "Never when plugged in"). The wifi is supposed to connect automatically when I turn the screen on (I assume), but that doesn't always happen, many times it just sits there searching for a connection, and I have to manually turn off the wifi radio, then turn it on again, and then it connects automatically.

I have my IP settings set to "static" - which has improved the problem I think, but has not completely solved it. My security setting on my router is (WPA/WPA2 PSK) - but this happens with other wifi networks as well. My Mobile network connection is always turned off, unless I come to use it, I manually turn on the 3G/4G LTE radio.