When I subscribed to the M100 Fibre Broadband service I was led to believe I should expect a download speed of about 108Mbps however I've never seen this speed when checking. Normally speedtest.net reports between 70-80Mbps. All testing is done on a Windows 10 PC using ethernet cat5 cabling.
Okay I've checked and tested my cabling which is all cat5e. My PC has a gigabit connection to a Netgear GS108 switch. The Hub will only connect to the switch at 100 Mbps which seems to be the problem. I was previously with BT and their smart hub had no problems with the gigabit connection.
take the switch out of the equation and test the pc wired directly to the Hub
-------------------- Services: HD TV on VIP (+ Sky Sports & Movies & BT sport), x3 V6 boxes (1 wired 2 WiFi,) SH2 in modem mode with Airport Extreme Router. On VIVID200, Talk Anytime Phone, x2 Mobile SIM only iPhones.