Originally Posted by H786
i have not yet experienced any wifi issues :S... im not sure what it could be unfortunately, try a full wipe flash
I can confirm there is wifi issues but not just on this FTF, I used your file to get to stock from cm11 (which had no wifi issues for me) I then relocked bootloader and used sonys tool to fully reinstall the latest firmware. In both instances of official ROM I had random wifi hang ups, not so much full disconnection but it did happen once randomly.
Point is, its nothing to worry about on your part its just a problem with official in general.