Scratch the above post, all working perfectly now!! Thanks for the help!

M Diamond wrote Are there any other PCs with gigabit port that you can connect to LAN port of C5 and check the link speed? Did you try firmware upgrade or reset the C5? If all the same, the router...

Model : Hardware Version : Not Clear Firmware Version : ISP : I've just bought myself an Archer C5 and setup went swimmingly apart from the transfer speeds from my Western Digital MyCloud to my PC....