When I initially set up the 4G router it correctly displayed the download / upload speeds in MB - now it displays it for low values such as 858Bytes/S download 179Bytes/S upload / while speedtest.net is displaying 12.53 Mbps download / 1.51 Mbps upload - this varies during the day from just under 29MB down / 3MB upload. I have an external aerial connected.

While the varying download speeds may be down to contention issue with the EE 4G network I would like to know why the tp-link 4G router is showing such strangely low values for download / upload - can I change a setting or is the router faulty.