Seems I fundamnetally misunderstood the ACS patch then. Is there any workaround for this? If there isn’t, I am SOL. The majority of my gaming at this point makes use of greater than 4 USB devices. In the Arch wiki, it shows some additional ACS options, using
pcie_acs_override = id:nnnn:nnnn
Could I use this to further break out my IOMMU groups?