Please test your connection using the official Tibus speedtest tool at the link below.
Tibus Speedtest
Network speed issues
To rule out any customer-specific internal network issues, we require that customers test the connection with their internal network disconnected, before raising a fault with our support team.
Customers connect to the Tibus on-premise device labelled TUCxxxxx on port 1. Please disconnect your network from port 1 at a suitable time, connect a standalone PC/Laptop to this port and run the speedtest. If the result is below your expected service level, please provide the test result to Tibus Support.