GPU running at x8 PCI-e instead of x16. GPU is seated in the 1st slot, tried seating in 2nd slot, then its running at 4x. Tried reinstalling drivers, tried adjusting some settings
pci express x8 video card - Newegg.com
If your new graphics card is running at 8x speeds, here are some troubleshooting tips | Technology News - The Indian Express
2018 New Pcie Pci-e 3.0 X1 X4 X8 X16 Female To X16 Male Graphics Card Protection Adapter Pcb Pci Express Test Card For Gtx1080 - Pc Hardware Cables & Adapters - AliExpress