If your Netflix loads slowly, you may have a weak or unstable connection to the internet.
Follow the troubleshooting steps
1. Stream your TV show or movie for one full minute
2. Ensure your network supports streaming
3. Reboot your computer
4. Restart your home network
5. Connect your computer directly to your modem
6. Improve your Wi-Fi signal
Have to seen the online here outlook sync settings windows 10 it is the batter way to all users for fast working.