macOS troubleshooting

Improve WiFi/AirPlay performance

Reduce stuttering in AirPlay Mirroring by disabling the extra wifi channel.

Make a script:

#https://medium.com/@mariociabarra/wifried-ios-8-wifi-performance-issues-3029a1$

UPDOWN="$1"

case "$UPDOWN" in
    up|down) echo "$UPDOWN" ;;
    *) echo 'Specify up or down'; exit 1 ;;
esac

sudo ifconfig awdl0 "$UPDOWN"

• https://medium.com/@mariociabarra/wifried-ios-8-wifi-performance-issues-3029a164ce94
• https://medium.com/@mariociabarra/wifriedx-in-depth-look-at-yosemite-wifi-and-awdl-airdrop-41a93eb22e48

Fix slow/buggy WiFi

1. Turn OFF wi-fi by selecting the wi-fi menu bar item and choosing “Turn Wi-Fi Off”
2. open /Library/Preferences/SystemConfiguration/
3. Trash the following files:

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

4. Reboot

Taken from https://osxdaily.com/2016/09/22/fix-wi-fi-problems-macos-sierra/