WIFI constantly disconnects when watching online stream video on my mbp My mac is Macbook Pro (mid2014), OSX 10.11.3 (15D21).
It disconnects literally every one minutes when I am watching stream on douyutv.com (Chinese version of  Twitch).
My other devices(smartphone, pad, pc) works all right. I did an experience that watch stream on all my devices, only mac disconnected.

Is it a bug or just something wrong with my configuration?
Try this quick-n-dirty solution.

Reset the WiFi


From toolbar -> Go -> Go To Folder
Paste this Address /Library/Preferences/SystemConfiguration/
Locate and delete these files


com.apple.airport.preferences.plist
com.apple.network.identification.plist
com.apple.wifi.message-tracer.plist
NetworkInterfaces.plist
preferences.plist

Restart your Macbook


You can read further for WiFi issues and solutions here