I have a Macbook Pro 2016 that is connected to 2 external monitors via Thunerbolt. When my Macbook is not connected to power supply, I can connect to the wifi with good signal strength but loading websites (or sending a ping) takes forever.
But when I plug in the power supply, the websites suddenly load instantly.
The problem does not occur when my 2 external monitors aren't connected.
Any ideas why this problem occurs?