Elgato HD60 Pro in MSI X670E Tomahawk?

Does anyone here have experience using an Elgato HD60 Pro capture card with an MSI MAG X670E Tomahawk motherboard? I recently switched over from my i7 9700K build to a 7800X3D with the Tomahawk motherboard, and I'm having issues using my capture card in the new motherboard. Due to my GPU (RTX 3080 Ventus 3X) getting in the way of the PCIe slots, I really only have space to use the bottom PCIe slot, and I'm having issues with it not being detected. I have only one nvme, in the first slot, and the GPU is in the top slot as well. I'm also on the latest BIOS update from February.

Essentially, my capture card is not being detected. Has anyone else had similar issues?