I have a Noctua NHU 14s cpu air cooler installed and didn't realize when I got it that it was as large as it was and it effectively prevents GPU installation in the top PCI slot so I installed my GPU in the second slot. It seems to work fine with no performance hit but the motherboard manual states clearly recommends using slot one and it lists the top slot as 3.0x16 but the other slot as 3.0x8 so I'm worried that I am indeed losing some performance that way and thus probably need a smaller cooler so I can do it the way it is intended. What are your thoughts ? Also greatly concerned about general clearance for installing any GPU in that top slot as it doesn't look like there is much room. Especially whenever I can finally get the new RTX 3080. Does anyone have any pics that show if say a 2080ti fitting on this board ?