I got this working after a while of trying things.
I first loaded all the ED800 drivers (including the USB3 drivers) into WDS and put them in to their own group with "Applicability: Drivers packages maqtching client hardware)". Then I made a new group with only the USB3 drivers with "Applicability: All driver packages in the group). I think the windows installs first the Chipset drivers from the first driver group and after that the USB drivers from the USB3 group.