I've spent a few weeks getting my X570 AORUS Elite WiFi + 3900X + GTX1070 running to my liking so I thought I would share. These settings are also confirmed working on the AORUS Pro WiFi and AORUS Ultra. It will probably be similar for all the X570 AORUS boards. Here are the settings for USB passthrough, single Nvidia GPU passthrough, and more.   Using BIOS F10. This is important as your IOMMU groupings can/will change with AGESA updates.   UEFI / BIOS Settings: Tweaker