Probably should be in the software section - apologies.

In my case it is a Thunderbolt card and if memory serves I'm lucky in that I *think* it *should* at least be in its own IOMMU group but I'll need to try again when I have a moment and investigate.

I've seen people reporting issues with latency etc but I also have doubts as to how many of the people who've had issues actually tried it, versus those just making assumptions.