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PCIE ACS override not working (can not split IOMMU groups)

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Hello everyone!

I'm working on my home network so I installed pfSense in a VM and I would like to pass my external NIC and M.2 wifi card to pfSense, but the external PCIE slot and the M.2 slot are in the same IOMMU group than the internal NIC.
I have an Asrock J3455-ITX motherboard, where I already enabled Intel virtualization in the BIOS and the iommu is enabled as well. And also tried pcie_acs_override=downstream,multifunction but IOMMU groups are stll the same.

Code:
dmesg | grep -i iommu...

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