@TP-Link Thank you for your response. I will try with a different cable this evening. It was 300Mbs+ before with no change in cable so didn't think to try. Will report back.

Hi, I'm new here so would really appreciate any help. I have M350 with Virgin Media, their Hub 3 in Modem mode and 2 M4's set up in router mode and ran with this for months with a solid 300Mps+...