[maunaloa]

Made, glad to hear it works! The specs for that card don't recite that it is AVB-compliant, which might become apparent with heavy loading. Under heavy loading, all the cards in an AVB network have to "respect" the reservations made by the other cards. The non-AVB cards don't "speak" the IEEE 802.1Qav timeslot reservations protocols and transmit at random intervals.

Then again, the card may be AVB-compliant but marketed without disclosing the fact (sounds unlikely, though).

Or, if you have a Mac that has AVB on the motherboard, the mobo AVB may "make" the Sonnet card behave.

If the new Intel card (now in transit) doesn't work, I'll try that Sonnet card.