I got a problem that my motherboard only got 1 pci e 1x slot. I used that slot for placing my network card because I am not able to pull the cables to the living room. My motherboard is ASUS Z87-K. So my question is this. If I place my sound card to the pci e 16x slot, will I bottleneck/decrease performance of my graphics card(gtx 770). I know some motherboards will share 8x if two slots are occupied. If so, can I set to use a custom amount in my BIOS or any other solution. Please help!!!