USB, even 3.2 doesnt support DMA mastering thus is bad for anything requiring performance. USB4 is just passing PCIE traffic and should be fine, but at that po

USB, even 3.2 doesnt support DMA mastering thus is bad for anything requiring performance. USB4 is just passing PCIE traffic and should be fine, but at that point you are paying >$150 per usb4 hub (because mobos have two at most) and >$50 per m.2 converter.