My GTX 1060 6GB is running @ Pcie x4 3.0, I tried everything (Reseating, Pcie Power cable adjustment) Nothing seems to work. I'm on a Ryzen 5 1600 @ 4.00Ghz, G.skill Ripjaws
VGA Bios Collection: Asus GTX 1060 6 GB | TechPowerUp
GeForce GTX 1060 with GDDR5X uses GTX 1080 (GP104) GPU
ASUS GTX 1080 STRIX 8G to O8G BIOS - Update - YouTube