This motherboard is missing the standard setting where you can enable the IGPU with a dedicated GPU. Right now there's no way to enable the IGPU unless a monitor is plugged into it. This differs from past Asus boards where you can still enable the IGPU (for Quick Sync) without having to plugin a monitor. One of the settings that's missing is called IGPU Multi-monitor I believe.
EDIT: This was JUST added in Version 0607. It's not present in Version 0403 if it helps anyone else.