My Evga GTX 970 SSC ACX2.0+ is not recognize at x16 , only x8. My second GTX 970 SSC ACX2.0 is recognize in 16X in the same motherboard same slot.
I've not noticed this issus before because the 2 cards have been used in sli with a i7 7800x who was only capable of x16 + x8. but now I have a i9 9820x who was capable of x16 / x16 and the car is still in x8.
evga x299 micro 2
also tested with:
Msi b450i gamings plus ac
ryzen 3 3100
ryzen 3 1200af (970 only recognize at x4 with bios tweak, faulty cpu I think because same issus with the second 970)
Rampage 3 gene
Maximus VIII hero
Do someone know something to solve that ? I think it was and issus in the graphic card it self