Consider yourself very fortunate that you have no issues with having the AMD PCI Bus driver installed. AMD changed the GPU driver to sideload the component as needed, and it's expected to be using the MS supplied driver in Device Manager. Having the AMD driver installed in Device Manager can cause instability and other odd issues. My laptop system did not like having it installed, not at all. Once I removed it, all my issues went away. There is no reason to have it installed along with the current gpu drivers, as it's part of the package, and will call it as needed.