im looking to purchase the LG 5K TB3 monitor when it comes out. Found out my Gaming 7 won't support it but UD5 TH will but there is the caveat depending on how many PCI express devices are in use. Does anyone know more about this? It says check chapter 1-7 in the manual but there is no more information there. Does anyone know which PCI-E slot the alpine ridge controller pairs with so I know not to use it with TB3?