First of all, disconnect all applications that could be making use of the Wi-Fi network. This method requires maximum attention to executing successfully, so please follow the steps carefully.ġ. Remove Existing Wi-Fi Preferences in Mac OS SierraĪnother way to fix slow Mac Wi-Fi is to delete or remove the previously existing Wi-Fi preferences in the Mac OS Sierra. If the problem persists, you can then opt to reset your Router by locating a red “reset” button usually located at the rear end of the router and pushing the button. Hence, it is advisable to first reboot your router by simply unplugging the adapter for a few minutes and plug it back. The fault might also be from the Wireless router supplying Internet access.

This is because though the slow Wi-Fi on Mac has been pinned to occur after an upgrade to Sierra OS, it does not necessarily mean that it would be the sole cause of a slow Wi-Fi. If the problem remains unsolved, you should consider either rebooting or resetting your W-Fi router. To do this, click on Wi-Fi menu bar > select Turn Wi-Fi Off > Turn off Bluetooth adapters on your MacBook > Restart your MacBook and try to reconnect. This can be easily done by disconnecting it from the wireless network. One of the first solutions to slow Mac Wi-Fi is to first restart your Mac’s Wi-Fi connection. Solution 1: Reset Wi-Fi Router and Restart Mac Wi-Fi Connection Remove Existing Wi-Fi Preferences in Mac OS Sierra Solution 1: Reset Wi-Fi Router and Restart Mac Wi-Fi Connection.

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