Interesting. The fact is how can a PCIe Gen 3 card be working as PCIe Gen 1 and even with speed x4. If it was built that way to work only as a Gen 1 x4 but that is ridiculous as the same gfx chip supports full PCIe Gen 3 x16. What im trying saying is it’s obvious it has some kind of restrictions with 1% chance of being hardware disabled.
The registry hack might be a possible solution but i was thinking of one thing, if a VBIOS flash can enable/unlock memory why not the same bios unlock the remaining lanes.
im sorry i dont know which bios did that ? Gtx1080 bios perhaps ?