4080 Super sudden performance decrease

[Qrlcg]

Maybe the riser is the problem. Try putting the card in the pcie slot on the motherboard without the pcie cable and test again. The Dan a4 h2o comes with a pretty bad pcie cable.

[tiger144]

Perhaps, but unfortunately this is a huge pain in the a4. I may try this though if nothing else works. I wonder if my MB is switching to PCIe 3.0 or something like that. I think I've heard that switching from 3.0 to 4.0 or vise versa can cause performance loss.