I recently put a computer together with the Phanteks Evolv Shift, the PCIe riser cable given is creating massive instability even on windows the computer is unusable. I talked to Phanteks to get this issue fixed they let me know to change the PCIe Gen in the motherboard to Gen2 however in my Asus Rog Strix B350-I motherboard I can't change it.
So now I am stuck with a £1500 computer that is like a paperweight due to the case. If anyone knows a solution I already ask Asus to include in the bios the Gen of the PCIe. I already talk to Phantkes but they basically playing stupid sent me the same cable expecting it would help they know of the issues they just don't advertise it.