So I unplugged my pc to put in a gpu, and when I booted it up the gpu was running at pcie x8 speed. I then restarted my pc and looked in bios which said it was running at x16. Then i booted back into windows and then it said Im using x16 speeds. This seems odd? should I be worried about it? I tried unplugging the pc again and booting it up and it still is running at x16 speeds