Just bought a GTX 1660 super along with a Gigabyte GA-H77M-D3H LGA Mobo and for some reason when I run GPU-Z it shows that the Graphics card is running at PCIEx16 2.0 even during the render test. I went into the BIOS and changed the Default PCIE option to Gen 3 and when I restarted, my computers resolution was wonky but GPU-Z showed me running at x16 3.0 then the resolution automatically changed to what I normally keep it at but the card dropped down to Gen 2??? Any tips?