Ok, so I opened up my Rig to see about reseating my gfx card, I didn’t bother doing this before because I was pretty sure the card was in the PCIe port closest to the CPU. When I looked it was indeed how I thought, but I thought ’I’ll take it out and put it back, with a bit of a blow on the contacts, just like my old Sonic 3 Mega Drive cartridge!’
Lo and behold once I turned my Computer back on it is now showing link speed at x16.
Moral of the Story: take it out and blow on it, that’ll do the trick!
Thanks all for your support!