Tried intel_iommu=on,igfx_off snd_hda_intel.snoop=0
Results are the same as with just disabling the IOMMU - i.e. one period plays, and then it gets stuck. So intel_iommu=igfx_off is useful, snd_hda_intel.snoop=0 has no effect.
Tried intel_iommu= on,igfx_ off snd_hda_ intel.snoop= 0
Results are the same as with just disabling the IOMMU - i.e. one period plays, and then it gets stuck. So intel_iommu= igfx_off is useful, snd_hda_ intel.snoop= 0 has no effect.